The British Postal Museum already has two sites in London, one being the achives and the other a store of vehicles postboxes etc. Both are open for public visits. Plans are advanced for the re-opening of part of the underground line at Mount Pleasant that runs to Paddington. The Museum does sell postcards and several have a railway theme to them. The museum’s phone number is 020 7239 2570 for further details.
To view the railway related postcards issued by the British Postal Museum in 2015 click this link:
Some older postcards issued in 2005 are detailed in this link: