Brake gangwayed
The BG is a type of British Railways MK1 coach. With a Guard's compartment in the centre and two large areas either side for storing luggage they were a very versatile type of coach and could be found all over the British Railways network and some are still in use today - although not in conventional use.
Interestingly the British Railways MK1 BG was shorter than the other types of MK1 - the BG's being 57' where as every other design was 63'. This was so the BG could go everywhere unlike their other MK1 counterparts which were banned from some station platforms because of their length.
A few BG's on preserved railways have been converted - such as into a disabled coach on the Severn Valley Railway and a disco coach and Santa's Grotto at the Midland Railway, Butterley due to the large space either side of the guards comparment and relative 'ease' of conversion.