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371-111ZSF Graham Farish Class 31 Diesel Loco number D5579 in Golden Ochre livery 371-111ZSF Graham Farish Class 31 Diesel Loco number D5579 in Golden Ochre livery 371-111ZSF Graham Farish Class 31 Diesel Loco number D5579 in Golden Ochre livery
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371-111ZSF Graham Farish Class 31 Diesel Loco D5579 Golden Ochre

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371-111ZSF Graham Farish Class 31 Diesel Loco number D5579 in Golden Ochre livery. Exclusive to Kernow Model Rail Centre.

D5579 was built by Brush Traction at their Loughborough works during 1959 and released to traffic on 7th January 1960. Initially allocated to 30A Stratford it was painted in an experimental livery and it is in this condition that our model is presented.  Described as “Bronze Gold” it was an attempt to improve the visibility for trackside workers of approaching trains.  Classmate D5578 was painted in an “Electric Blue” for the same reason, however the experiment was presumably not a success as yellow warning panels were adopted as standard instead and by 1965 D5579 had gained a small yellow panel.

The Class 31 is a favourite among enthusiasts and this Graham Farish model is a faithful rendition of these fan-favourites. The livery is expertly applied to the Graham Farish model using authentic colours, logos and fonts, whilst the technical features of the model are no less impressive thanks to the coreless motor, Next18 DCC decoder socket and pre-fitted speaker. Although all of this makes it easy to add sound to your model, why not make life even easier and opt for a SOUND FITTED model which will bring your layout to life straight out of the box.


  • Graham Farish N Scale
  • Era 5
  • Experimental Golden Ochre livery
  • Running No. D5579
  • Accessory Pack
  • NEM Coupling Pockets
  • Coreless Motor
  • Directional Lighting* – independently switchable at each end via switches mounted on the circuit-board, or via DCC
  • SOUND FITTED - Fitted with a Zimo MX659N18 Sound Decoder – See below for the function list
  • Length 116mm


F0 - Directional Lights

F1 - Engine Start (Sound On/Off)

F2 - Brake

F3 - Single Horn (Speed and Direction Related)

F4 - Two-Tone Horn (Speed and Direction Related)

F5 - Light Engine

F6 - Engine Idle

F7 - Speed Lock

F8 – Cold Start (F8 On before F1)

F9 - Flange Squeal (Speed Related)

F10 - Despatch Whistle

F11 - Buffering Up

F12 - Coupling Up

F13 - Compressor

F14 - Spirax Valves

F15 - Cooler Group Fan

F16 - Primer

F17 - Auto Wagon Buffering (F17 On & F5 Off only)

F18 - On - Driver's Door Opening / Off - Driver's Door Closing

F19 - Fade All Sounds

F20 - Directional Lights Off - No. 1 End (Fan)

F21 - Directional Lights Off - No. 2 End (Non-Fan)

F22 - 'Right o’ way’

F23 - 'Going under’

F24 - Station Ambience

F25 - Detonators

F26 - Shunt Mode

F27 - Volume Down

F28 - Volume Up

Analogue Users: Directional lights and basic Prime Mover (engine) sounds, which vary with speed, plus any other automated sounds, can be enjoyed when using this model on analogue control (DC) straight from the box!


The BR Class 31 Diesel Locomotives, originally known as the Brush Type 2s, were built by Brush Traction from 1957-1962, with a total of 263 locomotives constructed. The first Class 31 entered service in November 1957 and the design was one of the Pilot Scheme locomotives ordered by British Railways to replace steam traction. The Class was originally allocated to the Eastern Region, but gradually became common on both the Western and London Midland regions too.

The Class 31/1s were the standard locomotives, distinguished from the first batch of locos – the 31/0s – which had Red Circle multiple-working control equipment, a non-standard feature that led to them being withdrawn relatively early in the late-1970s. The 31/1s were fitted with Blue Star multiple-working equipment, as found on many other BR classes, and all had steam heating boilers from new, making them ideal for hauling passenger services. The Class 31/1s could be found on a variety of secondary and relief passenger duties as well as parcels and freight traffic. Commonly used in East Anglia, with allocations at Stratford and March depots, they were also found throughout the Eastern Region of BR with Finsbury Park sporting a large allocation, along with the depots at Tinsley, Immingham and Thornaby. Examples were also allocated to Bristol Bath Road and Old Oak Common on the Western Region, where they could be found working passenger trains as far west as Barnstaple and Paignton. In the early 1980s, Healey Mills and Bescot on the Midland Region also gained an allocation as replacements for Class 25s.

During the 1970s some Class 31s were fitted with Electric Train Heating (ETH) and these were reclassified as 31/4s to denote this feature. The 1980s would see BR undertake a programme of refurbishment for much of the fleet, this included the fitting of ETH to more locomotives but refurbishment was not reserved exclusively for the 31/4s, Class 31/1s were also refurbished without receiving ETH equipment. During refurbishment bufferbeam cowlings were removed along with the bodyside band, headcode boxes were plated over and fitted with two marker lights, and any remaining disc headcodes were removed. Where steam heat boilers remained, these were removed and a concrete block added instead to maintain the weight balance.

As passenger work dried up, many of the 31/4s were displaced and found themselves allocated to the departmental sector. In 1990, to reduce maintenance costs and prevent their ETH-fitted locos being borrowed for passenger work when extra traction was needed, the departmental sector isolated the ETH and removed the jumper cables from some of its 31/4s, resulting in these locos being reclassified as 31/5s. There were also two locomotives classified as 31/6, these had through ETH wiring fitted allowing them to work double-headed with an ETH-fitted loco.

The first withdrawal came in 1975 following accident damage, but most survived until the 1990s when EWS took on 153 examples from BR’s Transrail and Mainline freight divisions, although EWS spent little time running down its inherited fleet. Other operators however kept Class 31s active on the mainline and in 2022 it is still possible to see a 31 on the mainline. The Class has also been popular with the preservation movement, with more than 25 examples now preserved.

*Refers to head code box at front end and red lights at rear end when running, as per the prototype

371-111ZSF Graham Farish Class 31 Diesel Loco D5579 Golden Ochre
DCC Status:
DCC Sound Fitted
N Gauge
£ 279.95
Product Code:
In Stock - usually despatched within 24 hours
Stock Level:

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