London Transport RT - RT4325 History

by Derek Funnell

Back in the early 1970’s, a friend of mine, Robin Thomas, told me that he was considering purchasing a London bus, and wondered if I’d like to go in with him. As I’d been interested in commercial vehicles since primary school days, I said yes.

He’d looked into the legalities of owning such a vehicle, and in those days it could be registered as a ‘private heavy motor car’ and driven on a car licence. He’d also arranged garaging for it. Insurance was a bit steep, and we could only carry a maximum of six persons.

He had seen RT4325 when it was still in use with London Transport (circa 1973), and had written to them to state his interest and ask when it was likely to be withdrawn from service. I don’t recall the response, but it was sold to the London Bus Preservation Group in November 1973, and he purchased it from them in October 1974 (RT4325 was the last RT in service that had a roofbox to display the route number).

We took it to a couple of rallies in 1975; 

and here is RT4325 at the Weymouth Rally following which. in February 1976, she was put in a barn on a farm in High Wycombe in order that renovation work could be carried out. At this point another person, Jeff Guy, became involved in the project.

These three images show RT4325 in service, and were passed onto us by a bus enthusiast, following an article in the Hayes Gazette after Robin had bought the bus.  Another photograph of RT4325 in service can also be found on the Internet at Golders Green Station - circa 1968).

(UPDATE: The three photos above were taken by Basil Hancock, another enthusiastic contributor to this site, who has kindly supplied higher-quality scans of two of the original images, these are displayed below):

(Images by Basil Hancock)

And here is RT4325 pictured by Alan Bond at Hillingdon in 1975.  (Derek Funnell has commented that he believes this was pictured at a Showbus rally sadly no longer held at the Hillingdon show ground.)

Derek adds that Alan Bond has also mentioned the RT 50 rally at Covent Garden in 1989 when the RT4325 chassis was parked next to St. Helens RT No. D67 (see below here).   Twenty-five years later, by happenstance, at the RT 75 rally at Brooklands, the RT4325 chassis was again parked next to D67!

The restoration Project begins:
We started by removing the lower body panels to make access to the chassis easier. As the panels came off, corrosion and wood rot were exposed, and therefore more panelling was removed. This was the thin end of the wedge, and we went on to dismantle both the body and chassis entirely.

The platform riser was removed in January 1978 as it was considered beyond repair, so a replacement was made with the aid of the LT drawings (RT.006.E1). Also the wheel arches and much of the rear partition.

These three photo’s show the body as it existed in 1980. All components here have been removed, refurbished and re-assembled.

Hot Riveting on the Frame 05 Apr 1981 & the frame assembly.  This shows how far the chassis was dismantled. The flitch plates are being riveted back onto the side rails.

The chassis has since been re-built, and was put on display at Covent Garden in on August 6th 1989 for the ‘RT50’ rally (and at Newark in May 2012 for the AEC centenary rally).   Twenty-five years later, by happenstance, at the RT 75 rally at Brooklands, the RT4325 chassis was again parked next to D67! (see above here). 

Work on the body suffered delays from other vehicular distractions, and for a while, existed as a lower deck skeleton, from the platform riser forward, but excluding the front bulkhead. 

The front bulkhead required much repair work to the lower panelling due to fatigue cracks and corrosion. LT fitted reinforcement panels at major overhaul. (See drawing RT.440.E1).

Here is an inter-roof panel for RT4325 shown after de-rusting. In the second image a PRV inspection stamp can be seen showing PRV 15 (Did "15" denote a particular inspector?  Does anyone know? Ed.).

Derek Funnell's update - January 2016 

Derek writes: "Here’s a rather overdue update on RT4325’s restoration progress.  The main milestone passed, is the rebuilding and fitting of the front bulkhead. Work on the bulkhead began in August 2010 and was completed in November 2014.  With that installed, it was then on to the floor framework, and those in number 1 & 2 bays have now been fitted."

Front Bulkhead

RT Bulkhead 03/Oct/2010

Bulkhead components 26/Aug/2012

Front bulkhead in progress 13/Jan/2013

Panel assembly located on bulkhead 11/Aug/2013

Preparing to rivet top panel to bulkhead centre column 13/July/2014

Riveting channel section to bulkhead 28/Sep/2014

Fitting roof stick to bulkhead assembly 26/Oct/2014

Fitting timber packing to bulkhead pillar channel 26/Oct/2014

Applying Celloseal (Jointing compound) to bulkhead roof stick 02/Nov/2014

Front bulkhead assembly 09/Nov/2014

Derek, Verdun, and Jeff moving front bulkhead assembly 16/Nov/2014

Front bulkhead assembly about to be installed 16/Nov/2014

Fitting front bulkhead 16/Nov/2014

Front bulkhead assembly refitted to body framework 16/Nov/2014

Front bulkhead 20/Dec/2015

Bottom Frame

Coving panels - No. 1 bay - inside 30/Nov/2014

Floor frame assembly - No. 1 bay 30/Nov/2014

New coving rail for No. 1 bay O/S 27/Dec/2014

Riveting coving panel 23/Jan/2015

Rivet dolly for coving panel assembly 01/Mar/2015

Riveting coving panel assembly to foot bracket 01/Mar/2015

Coving panel assembly installed 12/Mar/2015

Fitting timber to No. 1 bay floor framework 22/Jul/2015

Floor frame assembly fitted - No. 1 bay 09/Aug/2015

Fuel filler coving panel assembly 23/Aug/2015

Floor frame assembly No. 2 bay 20/Sep/2015

Fuel filler coving panel - Initial assembly 22/Oct/2015

Fuel filler coving panel assembly - Preparing for riveting 23/Oct/2015

Fuel filler coving panel assembly - Riveting 23/Oct/2015

Fitting timber to No. 2 bay floor frame 18/Dec/2015

Fitting floor frame assembly - No. 2 bay 03/Jan/2016

Derek Funnell's update - July 2017 

Derek writes: Fitting of the lower deck floor framework was completed in June 2016. New footstool floor panels were made up and fitted in No. 3 bay in July 2016. These had to be made in two pieces and butt welded, due to the semi-circular pressing not running the entire length of the panels; to have made them as one piece panels would have required some serious press tooling!  We were very happy with the finished result.

The next task was to make up and fit new cant plate sections along the edge of the inter roof. The original ones were beyond repair, so we had eight foot long sections (longest we could get) made up by a local sheet metal fabricator.  Between August & September 2016 the sections were cut, drilled, and welded, to make the four cant plate assemblies (as per LT drawings RT.002.G9, RT.046.G1, & RT.055/6.G1).

The new cant plates could have been fitted at this stage, but it was preferable to fit them with the foot brackets as they are bolted through the cant plates and effectively secure them to the inter roof sticks.  As it was a wet assembly (jointing compound) we wanted all fixing points to be fully secured on installation.

Like the cant plates, the original foot brackets were also beyond saving, so a complete new set was made up.
Including the various items of tooling required (formers, press tools, drill jigs), manufacture of the brackets took about three months (Jan – Mar 2017).

With the foot brackets completed, installation of the cant plates was carried out during April and May 2017.
The next item on the agenda is the front frame assembly; and that will figure in the next progress update.

Bottom Frame

RT floor framework 26/June/2016 
(both old and new cant plate sections can be seen on the floor in this photograph)

Footstool floor panel test pieces; made June/2016

Forming footstool panels 19/June/2016

Footstool floor panels 30/July/2016

O/S footstool floor panel 11/September/2016

Foot Brackets

Machining RT foot bracket former 19/January/2017

Forming RT foot bracket blank 10/February/2017

Flanging holes in foot bracket side plates 05/March/2017

Foot bracket side plates 07/March/2017

Spot welding foot brackets 09/March/2017
(a genuine original unused foot bracket can be seen in the background of this photo’ - only one we had)

Drilling bolt holes in foot bracket 31/March/2017

Completed foot brackets 13/April/2017

Inter Roof

Cant plate welding fixture 17/Aug/2016

Welding NS rear cant plate section 10/November/2016

Applying jointing compound to O.S. front cant plate section 23/April/2017

Fixing O.S. foot bracket at bulkhead stick 23/April/2017

Riveting offside rear cant plate 25/May/2017

Nearside cant plate 09/June/2017

Offside cant plate 09/June/2017

Derek Funnell's update - April 2018 

Derek writes: 
The front frame assembly:

During its working life the near side front edge of the frame had sustained some damage, resulting in buckling of the top panel and the curved channel section, and splitting of the wooden front moulding rail. The N/S front corner pillar had also split slightly.

LT had carried out repairs to the moulding rail and added brackets to the channel section to enable the timber moulding to be refitted to the still deformed steel work.

Restoration work on the front frame assembly commenced on 30th April 2017. It was dismantled entirely and the components de-rusted by shot blasting. The damage to the top panel and curved channel section was made good. The side channel sections were too badly rusted, so new ones were made up, along with the end brackets which fix it to the side pillars above the bulkhead.

As the front frame is cantilevered from the main body frame, it was necessary to fit the upper deck side pillars in order to provide support for it. The first three pairs of side pillars were refurbished and fitted to the new foot brackets. With these in place, together with the various horizontal rails and diagonal tie bars, it was then possible to fit the front frame assembly.

The basic frame assembly was refitted on 11th March 2018, and the various timber components (corner pillars, moulding, seat and window rails) were refurbished and fitted over the following five weeks.

It may be noted that the off side front corner pillar has a halving joint in it, between the window rail and seat rail. I presume that this was a repair that LT carried out, and rather than replace the whole pillar, necessitating the removal of window pans and many more components, they opted for the jointing solution.

Next on my ‘to do’ list are the longitudinal seat frames and rear wheel arches. A fair bit of work required on them!

Front Frame Renovation

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Upper saloon front frame 30/April/2017

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Front frame 12/Jun/2017

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Riveting tie bracket to front frame channel assembly 14/Sept/2017

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Riveting front frame channel to hoop stick assembly 15/Sept/2017

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Riveting tie bar to front frame assy. 25/Feb/2018

cab_cant_rail_moulding_and_door_runner_08mar2018.jpg (222101 bytes) Cab cant rail moulding and door runner 08/Mar/2018
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Original cant rail moulding & door top runner rail 04/May/2018

Upper Deck Side Frame

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Upper deck side pillar repair 23/Jul/2017

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Upper deck side pillars No. 1 & 2 bars 23/Aug/2017

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Upper deck components 29/Dec/2017

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Fitting NS upper deck pillar at No. 2 bar 28/Jan/2018

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Fitting NS waist rail ass'y at No. 2 bay 28/Jan/2018

Front Frame Fitting

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Fitting front frame assembly 11/Mar/2018

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Front frame assembly fitted 11/Mar/2018

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Front frame timbers fitted 15/April/2018

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Front frame timbers fitted 15/Apr/2018

Body - General

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Body shell 15/Apr/2018

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Body shell 15/Apr/2018

 Derek Funnell's update - October 2019

Derek writes: 
Dismantling of the longitudinal seat frames and footstools began in May 2018.
The seat riser panels were severely corroded along the lower edge, and had been repaired during the vehicle’s service life by riveting patch panels over them.

These repair sections were removed and the seat risers shot blasted. The corroded portions were cut away and new sections were made up. Temporary flanges were formed along the cut edges of the seat risers in order to locate the new sections in position by spot welding. The sections were then MIG welded (by a professional welder), after which the flanges were cut away and the welds ground smooth.

The angle sections around the upper edge of the footstools were also badly corroded and needed to be replaced. A local fabricator folded some sheet steel to produce straight lengths of angle. These were then shaped to the footstool profiles using a sheet metal shrinking/stretching tool.

The seat frame and footstool components were then riveted back together and the assemblies then refitted to the body. With these in place, the rear wheel arches were then refitted, after having been shot blasted and had some fatigue cracks welded up.

The plywood tread panels on the footstools were replaced with newly made ones.
Work on the seat frames and wheel arches was completed in September 2019.

Between July and August 2019 the front blind box frame, sill rail, and roof front end ventilator structure were all stripped down and rebuilt. The blind box frame and sill rail have been refitted to the body structure. The ventilator structure will be refitted later.

We are now making preparations to reunite the body with the chassis, and it is anticipated that this will be carried out within the next month or two, if all goes to plan!

Longitudinal Seat Frames & Wheel Arches

Offside wheel arch trial fitting (pre shot blasting) 22/Apr/2018

Offside wheel arch trial fitting (pre shot blasting) 22/Apr/2018

N/S & O/S footstools 27/May/2018

N/S & O/S footstools 27/May/2018

O/S longitudinal seat frame components 09/Jun/2018

O/S longitudinal seat frame riser 25/Jul/2018

O/S longitudinal seat frame riser 25/Jul/2018

Welding repair section to O/S longitudinal seat frame riser 02/Aug/2018

O/S footstool riser angle section 18/Aug/2018

O/S footstool angle section - old & new 04/Sep/2018

Riveting angle section to O/S footstool frame 06/Sep/2018

Riveting bracing section to O/S long seat frame 13/Sep/2018

Riveting fixing bracket to O/S long seat frame 15/Sep/2018

Trial fitting of O/S long seat frame 23/Sep/2018

O/S wheel arch with battery cables 19/May/2019

Rear N/S wheel arch fitted 04/Aug/2019

O/S footstool & seat riser 01/Sep/2019

Fitting O/S footstool tread panel 15/Sep/2019

Footstools & seat risers fitted 29/Sep/2019

Riveting balata belting around differential trap 06/Oct/2019

Upper Deck Front Framework

Front frame sill 06/May/2019

Front frame sill 06/May/2019

Front blind box frame 14/May/2019

Riveting front blind box frame 09/Jul/2019

Fitting front blind box frame 18/Aug/2019

Fitting front blind box frame 18/Aug/2019

Fitting front blind box frame 18/Aug/2019

Fitting front blind box frame 18/Aug/2019

Roof front end structure 17/Jun/2019

Roof front end structure 17/Jun/2019

Roof front end structure 17/Jun/2019

Roof front end structure 13/Oct/2019

Roof front end structure 13/Oct/2019

Roof front end structure 13/Oct/2019

Derek Funnell's update - February 2020

Derek writes: 
Body and Chassis Reunion

When we originally separated the body and chassis, way back in 1980, the chassis was jacked up and levelled, and a support frame built under the body. The fuel tank and air reservoir etc. had previously been removed to allow this. The body mounting bolts were then removed and the chassis jacked down, leaving the body on the support frame. The rear axle was then removed and the chassis dragged out forwards with the rear end supported on a trolley.

Replacement of the chassis was a reversal of this procedure, but as the chassis was now fully restored we weren’t too keen to remove the axle and other items in order to avoid the support frame columns. Therefore another means of supporting the body was constructed.
It was, however, still necessary to remove the fuel tank and rear exhaust pipe.

Two beams were placed through the lower deck in Nos. 1 & 3 bays, just above the seat rail. These were connected to the floor frame by lengths of studding. The studding nuts were tightened so that the weight of the body was taken off the original support frame. The support frame was then removed, but leaving the two columns under the platform riser in place.

With the chassis positioned in front of the body, the rear wheels were removed and replaced with tyre-less wheels, in order to lower the chassis sufficiently to pass under the bulkhead. A wooden “track” was laid down for the wheels to run on. A plum bob was hung from the rear cross member in order to align the chassis with a centre line marked on the floor.
The chassis was then rolled back carefully on the hand brake until it was in the correct position under the body. The barn floor being on a slight incline aided this manoeuvre.
The chassis was then jacked up to the body and supported on wooden blocks. The body support beams were then removed, along with the two remaining columns under the platform riser.

Comment from the Editor:
The next stage in this restoration process is still undecided but Derek believes it will probably be the upper deck rear end side frame structure (see drawings RT.038.C1 sh 1, RT.038.C1 sh 2, & RT.039.C1). Derek commented that there is quite a bit of work required on that structure.

Body & Chassis Reunion

Scrapped body components 06/Jan/2019

Chassis & body 03/Nov/2019

Chassis & body 03/Nov/2019

Chassis & body 10/Nov/2019

Chassis & body 15/Dec/2019

Chassis & body 15/Dec/2019

Rolling chassis under body 12/Jan/2020

Rolling chassis under body 12/Jan/2020

Rolling chassis under body 12/Jan/2020

Rolling chassis under body 12/Jan/2020

Raising chassis under body 12/Jan/2020

Body on chassis 12/Jan/2020

Refitting fuel tank 02/Feb/2020

Fitting body hold down bolts 16/Feb/2020

Body on chassis 16/Feb/2020

Derek Funnell's update - January 2021

Derek writes: 
The Covid crisis has slowed the restoration progress as I’m currently unable to visit the barn, but I am able to work on some of the components which I have at home.  And, as per the end of my last update, I’m currently working on the upper deck No. 5 & 6 bay side frames. The offside bays are now complete.  I’ve attached a couple of images, unfortunately of less quality than usual.

Nearside Bay Assembly & Offside Bay Framework

Nearside No.6 Bay Assembly
06/ Dec/2020

Offside Nos. 5 & 6 Bay Framework fitted

Derek Funnell's update - August 2021

Derek writes:
Upper deck rear end side frame structure:
The dismantling of the offside upper deck side frame assembly (bays 5 & 6) was carried out in March 2020.
As the stress panels were rather rusty, and the rivet holes were somewhat oversize, I decided it would be best to make new ones.  Also, the channel section in bay 6 was badly corroded so this too was replaced with a newly made one.  The rest of the framework was shot blasted and painted.  Assembly of the two bays was carried out during late July 2020 and then the entire assembly fitted to the body shell in mid August.
The roof side rails were refurbished in September and the offside one fitted in late October 2020.

The dismantling of the nearside upper deck side frame assembly (bays 5 & 6) was carried out in October 2020.
Again the stress panel (bay 5) and channel section (bay 6) were replaced due to their condition.  The blind box assembly (bay 6) was shot blasted and painted, as were the remaining components.

Due to the Covid lockdown period and travel restrictions (Dec 2020 – Mar 2021), I carried out renovation work at home on various cab framework components.
Reassembly of the nearside upper deck side frame was completed in May 2021 and it was fitted to the body shell in early June, along with the nearside roof side rail.
I have now moved on to replacing the floor boards on the upper deck.

Upper Deck Rear End Side Frame Structure

O.S. No. 5 & 6 bay assembly 01/Mar/2020

Flanging holes in O.S. No. 6 bay channel section 14/Jun/2020

Trial assembly of O.S. No. 6 bay frame 02/Jul/2020

Riveting O.S. No. 6 bay stress panel 09/Jul/2020

Riveting O.S. No. 5 bay stress panel 15/Jul/2020

Riveting O.S. No. 5 & 6 bay assemblies together 26/Jul/2020

Riveting foot bracket to O.S. No. 5-6 bay assembly 09/Aug/2020

O.S. No. 5 & 6 bay assembly ready for fitting 09/Aug/2020

Fitting O.S. No. 5 & 6 bay side framework 16/Aug/2020

O.S. No. 5 & 6 bay framework fitted 23/Aug/2020

N.S. No. 5 & 6 bay assembly 04/Oct/2020

N.S. No. 6 bay assembly 11/Oct/2020

New components for N.S. No. 5 & 6 bays 26/Nov/2020

Renovated components for N.S. No. 5 & 6 bays 27/Nov/2020

N.S. No. 6 bay assembly 06/Dec/2020

N.S. No. 6 bay assembly 13/Dec/2020

Riveting channel section to blind box 11/Apr/2021 

Riveting N.S. No. 5 & 6 bays together 02/May/2021

N.S. No. 5 & 6 bay assembly ready for fitting 23/May/2021

N.S. No. 5 & 6 bay assembly fitted 06/June/2021

N.S. No. 5 & 6 bay assembly 22/Aug/2021

Derek Funnell's update - November 2021

Derek writes:

Upper deck floor boards:
As the original floor boards were in a rather rough condition (after their original removal), it was decided that they would be replaced with new ones.  A sample board was sent to timber merchant W. Hanson in Southall (located under the iron bridge right next to the former AEC site) who machined up a quantity of tongue and groove boards to match.
The new boards were delivered to site on Friday 6th August, and work to fit them began on the following Sunday. The work was completed on 7th November and with a decent floor then in place I was able to fit the front roof stick and the roof route box.

The next job on the list is the upper deck rear frame; a fair bit of work is required on that!
I’m also looking to re-assemble the cab framework, as a number of the components have already been renovated.

Upper Deck Floor Boards

Upper deck floor boards 22/Aug/2021

Fitting upper deck floor boards 05/Sep/2021

Floor boards fitted & trial fitting of roof box 07/Nov/2021

Derek Funnell's update - October 2023

Derek writes:

The individual cab components were taken home and renovated over a period of time from early 2021.
We were fortunate to have obtained new rubber floor sealing strips some time ago, as the original ones were in poor condition.
Work on the cab interior was completed in August 2023.

Lower deck flooring:-
As with the upper deck flooring, the lower deck boards were supplied by W. Hanson of Southall.
Work commenced on fitting the boards in November 2022 and was completed in February 2023. The access hatches have not at this stage been refurbished, apart from the flywheel cover.

Upper deck coving panels:-
All of the coving panels were in poor condition, having had repair panels fitted to their lower edges. It was therefore decided to make new ones. Fitting of them was completed on 8th October 2023.

Rear frame:-
Work commenced on the upper deck rear frame in August 2022. It was dismantled completely, re-built, and re-fitted to the body by July 2023.
Work has now commenced on the lower deck rear framework.


Cab front frame components 12/Feb/2021

Assembling cab side frame 11/Mar/2021

Cab O.S. corner pillar 25/Nov/2021

Cab N.S. lower panel 19/Dec/2021

Cab N.S. lower panel 08/Feb/2022

New cab floor seals 11May2022

Cab floor 04/Sept/2022

Cab interior 27/Aug/2023

Cab framework 27/Aug/2023

Lower deck flooring

Lower Deck flooring 11/Dec/2022

Lower deck floor boards 26/Feb/2023

Upper deck coving panels

Original upper deck coving panels 17/Sept/2023

Upper deck 08/Oct/2023

Upper deck coving panels 08/Oct/2023

Upper deck rear frame

Jeff working on upper deck rear frame 02/Oct/2021

Upper deck rear frame 11/June/2023

Upper deck rear frame awaiting fitting 18/June/2023

Upper deck rear frame installed 25/June/2023

Upper deck rear frame 08/Oct/2023


RT4325 in the LT Aldenham Works Float System
The following chart shows, in practice, the result of the Works Float System employed at London Transport's Chiswick and Aldenham works where chassis & bodies were exchanged on a regular basis.  For a more comprehensive understanding of this process see London Transport Aldenham Works. Ed.
RT4325 (Reg. No. NLE 989) History

AEC Chassis No. 09617290 

Park Royal Body No. 2103 History

AEC Chassis No. 09617290  (LT CU5229) (see Note-1)

Fitted to AEC chassis No. 09611055 (LT CU1890)

Reg. No. NLE 989 [Log Book references chassis 09617290] 

Reg. No. JXN 202

Initial body No. 8374

Body No. 2103

First registered 15/06/53

First registered 08/04/48

Type: 3RT8/2 (although at some time it was re-designated 3RT10, possibly when body No 2103 was fitted).

Type: RT3(c) RT824 (Built in a batch designated RT752 to RT851).

First in service 15/07/53 at Victoria, although between those dates it is listed as being at Park Royal and Aldenham.

First in service 22/09/48 at Mortlake, although between those two dates it is listed as being at Aldenham, Park Royal and Chiswick.

This AEC chassis 09617290 (LT CU5229) was given a Saunders bodied RT 250 and was scrapped in 1970!

Body removed from RT824 23/02/56. Transferred to RT925, JXN303.

Removed from RT925 28/09/59. Transferred to RT2774 LYR758.

RT824 scrapped at Wombwell Diesels 22/05/73 with Body No. 5833.

Re-bodied 28/01/64 with Park Royal body No 2103.

Removed from RT2774 28/01/64. Transferred to RT4325.

Converted to Decimalisation Trainer 10/09/70 at Leyton.

In storage from 01/04/71 to 15/10/71.
Used for driver training between 16/11/71 and 09/11/73.
Sold to London Bus Preservation Group, Cobham 12/11/73.
Purchased by Robin Thomas 20/10/74.
I am grateful to Brian Watkinson for the details below on the pre-history of this chassis & body combination

AEC Chassis No. 09611055 - RT4325 PRE-history

Park Royal Body No. 2103 Type RT3 PRE-history

The AEC chassis number is actually irrelevant; LT gave this chassis the designation CU1890 (Chassis Unit) in 1948. 

New as RT 824: 22/9/48 to M 26/7/50 J 12/9/52 to Aldenham (WK) for overhaul 

New as RT 1053 19/12/48 to GY 12/12/48; 26/1/53 WK for overhaul. (Chassis overhauled at Chiswick)

O/H Still RT 824 24/9/52 to J 16/7/53 HW 9/55

O/H Still RT 1053 26/2/53 to GY 28/8/56 WK for overhaul

Body type reclassified as RT 10 (see Note-2) 23/2/56 WK for overhaul.  

Now RT 1141 18/12/60 to RD 20/1/64 WK for overhaul

O/H Now RT 925 21/3/56 to HW 24/9/59 WK for overhaul.

O/H now RT 4325 to AP 19/2/64 with body No. 2103 (See body details right).

O/H Now RT 2774 21/10/59 to HD 17/1/64 WK for overhaul.

O/H now RT 4325 to AP 19/2/64 23/5/67 WK re-paint 3/1/5/67 AE 24/7/70.

Delicensed (u) at AE 10/9/70 T Decimal trainer 1/4/71 Tu 19/10/71 CTu 16/11/71 H Trainer (t) 12/8/72 Dt 9/11/73 Du Sold 22/11/73

Note-1: For any vehicle undergoing overhaul at Aldenham (and Chiswick too) its body & chassis were often (usually) interchanged with bodies & chassis of other similar vehicles; that resulted in Registration Plates (and thus Log Books) being applied to a body/chassis combination that was not the original.  The Log Book & Tax Disc being Department of Transport official documents cannot ever be altered, thus a Tax Disc referencing a particular Registration Plate would always reference the original Chassis for that vehicle.  In order that a bus could leave Aldenham the same day as one with the same LT designation number & Registration Plate came in for overhaul (and the Tax Disc swapped over), it was necessary that the actual chassis could be changed.  Although LT had governmental dispensation to transfer registration numbers between vehicles, as the Log Books could not be altered, LT gave each chassis a unique Chassis Unit (CU) number in order to know which was which (for more information see the Aldenham page).

In the case of RT4325 (NLE 989), it finally left Aldenham with body 2103 & Chassis CU1890 (that was AEC Chassis No. 09611055).  However, on the brass plate on the dumb iron it had RT4325 & AEC Chassis No. 09617290, that tied up with the Log Book for NLE 989 (and the stock number RT4325) but was not the actual chassis in use.

The original chassis 09617290 for NLE 989, that was given LT CU5229 designation, ended up on a Saunders bodied RT 250 and was scrapped in 1970! 

Note-2: 150 bodies that were delivered in 1948 and fitted to RTs 752-851 and 962-1011 incorporated a number of modifications. These included the fitment of body mountings that would enable the body to fit the Leyland RTL chassis. The cab front, the front N/S and front bulkhead were modified to the same design as that of the Saunders RT3/3 body with a route plate holder fitted under the canopy, semaphore signal castings fitted on the N/S front bulkhead pillar, and on the O/S below the cab entrance, the rear registration plate box was also redesigned to incorporate a direction arrow. The front N/S canopy valence panel was cut away to allow the route plate to be seen (in the same style as all later RT bodies that had the canopy blind box fitted). The cab front lower rail (below the headlight) was altered to sweep up over the larger O/S chassis dumb irons of the RTL chassis ( the RT10 body's cab lower front rail was NOT the same as the Saunders; as with the RT3 the Saunders bodies were NOT intended to be fitted to RTL chassis and had no need of the cab front bottom rail sweeping above the dumb irons).  This design was applied to all later RT bodies. Although originally classified as RT3 bodies these bodies were reclassified as RT10 in September 1955.

I am grateful to Derek Funnell for supplying the set of over eighty documents of drawings, plans, lists etc. detailing the London Transport RT body structure that was used in the reconstruction of RT4325. These documents can be downloaded from the LT RT Downloads page. Ed.