Forty years after a large part of the BR Class 37 fleet passed through Crewe Works for mid-life refurbishment, these ever-popular English Electric machines will soon be available as ‘37/5s’ and ‘37/7s’ in O gauge for the first time.

Much like the real thing, Heljan's Class 37s are also undergoing a major overhaul to add finer detail, new features and a wide range of changes that allow us to replicate the many differences across the fleet. Despite these improvements, the RRP has been cut to just £499.00, further enhancing their value for money.

This announcement also introduces new arrangements for Heljan O gauge locomotive production, with final quantities being strictly tailored to shop pre-orders. Customers wishing to secure these new Class 37s should place advance orders before the deadline of Friday January 30th 2026. At this point, production quantities will be fixed based purely upon the advance orders from the shops and any liveries which do not meet the minimum threshold will not be produced. Expected release will be late 2026

As always we are also offering our numbering and weathering service through the workshops should customer's wish to take advantage of this service. Weathering one of the factory numbered examples is an additional £50.00 with the customer's choice of the degree of weathering from light through to heavy weathering.There is also the option of sound fitting as well through the workshops at an additional £310.00 using the ESU v5.0 XL chip using a earthmover EM2 speaker

Only one version is being offered un-numbered. Numbering a loco is just £25.00, numbering and weathering an additional £75.00. This usually take 3-4 weeks to complete. We can also do named examples if required at an additional £25.00 subject to the number of plates required and this can take up to 6 weeks as the name plates are made specially to order.

To cater for the many small detail variations across the refurbished Class 37 fleet, our all-new tooling will feature a wealth of new parts including:

• Standard or ‘heavyweight’ body
• Single piece or split nose grilles
• Standard or modified fuel tanks
• Cast or fabricated bogies
• Ribbed or plain boiler roof panel
• Oval or rectangular buffers

Standard features have also been upgraded and will include…

• Highly detailed model in 1:43.5. (O Scale)
• DCC Plug and Play interface (ESU XL decoder interface)
• Five separately switchable lighting functions in DCC mode
• Separately switchable tail lights
• Separately switchable cab lights
• Separately switchable engine room lights
• Easy fit 3-piece miniature snowploughs
• Provision for easy installation of large speaker(s)
• Motorised roof fan.
• Highly detailed cab interior.
• Sprung Buffers
• Heavy Duty twin motors with flywheel drive.
• Wire handrails.
• Sprung screwlink couplings.
• Designed with plug and play sound installation in mind.
• Heavyweight model, weighing approximately 4 kg.