Video: Toby Tankard
Photo: Wayne Walsh
Est. 1999 — South East Locomotive Group
Dedicated to the restoration and operation of British Rail Class 33 “Crompton” diesel locomotives for future generations.
Since 1999, the South East Locomotive Group has been dedicated to preserving and operating two iconic British Rail Class 33 diesel-electric locomotives — affectionately known as “Cromptons” now based at the Spa Valley Railway in Tunbridge Wells, Kent.
Our volunteer-led team has invested thousands of hours in meticulous restoration, ensuring that locomotives 33063 “R.J. Mitchell” and 33065 “Sealion” continue to thunder along the heritage line for future generations to experience.
From hands-on mechanical work to public engagement and driving experiences, we are passionate about keeping Britain’s diesel heritage alive and accessible to all.
“A labour of love for Britain’s diesel heritage”
British Rail Class 33 diesel-electric locomotives, built by the Birmingham Railway Carriage and Wagon Company with Crompton Parkinson electrical equipment.
Named after the legendary Spitfire designer, 33063 is currently operational in blue primer livery following extensive bodywork repairs. She regularly hauls services along the Spa Valley Railway, delighting visitors with the distinctive Crompton engine note.
33065 Sealion awaits her turn in the restoration queue, with work set to commence following completion of 33063's overhaul. Plans include a full mechanical overhaul and repaint into a heritage livery befitting her distinguished service history.
Step into the cab of a genuine Class 33 diesel locomotive and take the controls. Our driving experience days offer an unforgettable opportunity to operate one of these magnificent machines along the Spa Valley Railway under expert supervision.
Whether you’re a lifelong railway enthusiast or looking for a truly unique gift, this is an experience unlike any other.
Join us trackside at the Spa Valley Railway for galas, open days, and unique diesel experiences throughout the year.
The latest from the South East Locomotive Group — restoration progress, events, and community updates.
Today we had success with the marker lights reactivation!
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An update for you on 33063 as it has been a few months now since the last one.
Read MoreFuel, parts, paint and examinations are all funded by our supporters. Make a one-off donation, or join the group and become part of the story behind 33063 and 33065 Sealion.
A glimpse at life on the Spa Valley Railway with our Cromptons.
One sanded and one not sanded back Desk door from Cab 2
Toby Tankard
33063 sun bathing for the first time in a while
Toby Tankard
33063 the night before leaving the shed for the model railway weekend
Toby Tankard
The grand removal of the original lion & wheel from the loco.
Toby Tankard
No.2 end repaint progress
Toby Tankard
33063's new engine room door in top coat grey
Toby Tankard