I believe it's number 38 that is at the Telford Steam Railway, I photographed it back in April 2021 during a visit there, it is in a worse state than it looks in the photo!
The bodies wooden frame has been exposed to the elements for years and the roof has several sections missing destroying what little of the interior remained, if my memory serves me right the guy who let me get up close to look at it said that the underframe was badly twisted as well.
As much as I appreciate the work of preservation groups, and the Telford team are brilliant, I can't really see this being restored where it is, sadly.
Onto the actual model itself, I am going to presume that the 4mm version will be a simple scale down from the 7mm version, if so it should be an excellent model, my only concern is the speaker housing is very visible in the luggage compartment of the 7mm version so might be even more so in 4mm scale, hopefully for those of us not needing sound it might be removable.
Chris.