Hornby TT3062M Class 37/7 Rail Operations Group 37800 'Cassiopeia' Diesel Locomotive

We are delighted to present a further run of the highly detailed Hornby TT:120 English Electric Class 37 for the October 2026 range launch.

Including working lights, a weighty diecast chassis, smooth running characteristics and an accurate tooling suite to depict various class 37 subclasses, our venerable ‘tractors’ are a must have for any TT:120 layout. TT3062M depicts No.37800 in Rail Operations Group ‘Europhoenix’ livery, named ‘Cassiopeia’.

Model Specification:

• Highly detailed model based on extensive research and design, including historical drawings and laser scans
• Diecast chassis and underframe giving the mode a weight of 170 grams
• Assortment of separately fitted parts, including lamp brackets, speedometer, sandpipes, and roof horns
• Etched metal roof grille
• Detailed cab interior
• Powerful 5-pole motor with dual flywheels providing power to all wheels
• Electrical pick-ups on all wheels
• Brass axle bearings
• Pivoting NEM coupling sockets
• Accessory pack that includes body removal tool, optional snowplough and bufferbeam pipes
• Minimum 2nd radius curves

Electronics:

• Working directional and cab lights, including Day/Night mode (please note some functionality will only work on DCC)
• Next18 DCC Decoder Socket compatible with HM7000 system
• Decoder socket housed underneath clip-on body
• Space for HM7000-N18TXS Sound Decoder to be fitted
• Space for HM7070 Power Bank for uninterrupted running

Tooling:

• Class 37/7
• Plated Headcodes
• High Intensity Lights
• LED-style marker lights
• Multiple working socket recessed in nose ends
• Square Buffers
• Plated Roof Boiler Plate

Livery:

• Rail Operations Group ‘Europhoenix’
• Semi-gloss finish
• Faithfully created using accurate colours and fonts
• Era 11

Hornby Recommends:

• MK3 Coaches

History

Built at English Electric’s Vulcan Foundry, near Newton-le-Willows in Lancashire, this locomotive started life as D6843 in May 1963. It went new to Cardiff Canton, before moving north to Scotland in August 1966, where it stayed until returning to South Wales in October 1974, having been renumbered to 37143 under TOPS earlier in the year. 

The Class 37 was rebuilt as a subclass ‘37/7’ with additional ballast weight for hauling heavy coal and steel trains in South Wales, and was renumbered 37800 in 1985. Named ‘Cassiopeia’, it is one of 12 owned by Europhoenix, but on loan with Rail Operations Group (ROG) and is still in service.