‘Merlin’ light engine on level crossing 8/9/1956 (Courtesy Transport Treasury/Eric Sawford Collection)
ES3961 Merlin Hudswell diesel (LB) LE on level crossing PBA Avonmouth Docks 8956-(ZF-9417-87858-1-010)
Bristol Harbour Railway Blog
An unofficial blog site about the BHR and industrial railways in Bristol
Bristol Harbour Railway Blog 
I rescued this locomotive and took it to the Keighley and Worth Valley railway.
I have just about dealt with the tinworm and it is going back together. I am making the sides original like your photograph and got rid of the extended side doors the the dock board fitted. It is qite hard going as it is all made of 1/4″ plate Nice to see a reference photo.
Regards, Ben Wade
Thanks for your comment Ben, great to hear of the progress you are making and looking forward to seeing Merlin in action again.