A new steam train could be based on the Gloucestershire Warwickshire Steam Railway (GWSR).

An agreement has been signed between the railway and Churchward County Trust (CCT), which is building Churchward ‘County’ class 4-4-0 No. 3840 County of Montgomery.

The agreement, which supersedes an earlier ‘agreement in principle’ between the GWSR and the CCT, gives the railway first option to be the home of the locomotive when it is completed.

This would see the engine based at the railway’s locomotive workshops in Toddington where it would become part of the line’s operating steam fleet.

Richard Johnson, chairman of GWSR said: “While we clearly don’t know what our railway’s locomotive requirements will be in ten or 15 years, which is when the new ‘County’ is likely to be available, I’m thrilled that we are being offered first choice for the engine’s future base.

“That we are the Trust’s railway of choice for this brand-new locomotive reflects the highly professional standards achieved by our steam locomotive department.

"This new-build project has captured the imagination of the heritage railway movement so this is a real honour. It will be a delightful addition to our fleet of locos, and a great attraction in its own right.

"It is something that we all look forward to, and are very grateful to the Trust for offering it to us.”

The original 40 ‘County’ class 4-4-0 express locomotives were introduced by the Great Western Railway’s chief mechanical engineer G J Churchward in 1904.

However, the ‘Counties’ had relatively short lives, as were withdrawn by 1933, being superseded by more powerful 4-6-0 classes.

One of the original locomotives, this one is no. 3827 ‘County of Gloucestershire’ - all of these engines had been withdrawn by 1933 (picture courtesy Rail Archive Stephenson)

One of the original locomotives, this one is no. 3827 ‘County of Gloucestershire’ - all of these engines had been withdrawn by 1933 (picture courtesy Rail Archive Stephenson)

The engines had a particular association with the Stratford-upon-Avon to Cheltenham route, over 14 miles of which the GWSR today operates (between Broadway and Cheltenham).

They were used to haul Wolverhampton-Penzance express services, thanks to a weight restriction over Stonehouse viaduct that at the time, precluded the use of larger engines.

Gary Boyd-Hope, chairman of the Churchward County Trust said: “I’m both thrilled and grateful that we have been able to turn our previous ‘agreement in principle’ with the GWSR into something more formal.

"The line will – hopefully – make the perfect home for County of Montgomery, as not only is the route an historically appropriate one for the ‘County’ class, but the GWSR today remains a stronghold for beautifully restored and maintained Swindon-built locomotives. No. 3840 would therefore be in good company and safe hands.

“This will be the 41st member of the class to be built. It’s being constructed at Tyseley Locomotive Works where the main frames are now being erected.

The frames for County of Montgomery are being erected at Tyseley. Photo: Gary Boyd-Hope

The frames for County of Montgomery are being erected at Tyseley. Photo: Gary Boyd-Hope

"Meanwhile, we have a standard Swindon No. 4 boiler of the type used by the class set aside at Didcot Railway Centre, courtesy of the Great Western Society, and we have recently placed the orders for the casting of new cylinders and coupled wheels.

"Real progress is being made, but of course there is a huge amount of work still to do.

“As with all such complex and costly projects timescales are difficult to predict, but if in time the GWSR takes up this ‘first option’ offer, I hope that we will be able to see County of Montgomery proudly steaming out of Toddington station with its first train in time to mark 100 years since the last of the original class was withdrawn, in 2033.”