scotland (4K)
The Friends of the Far North Line
Cairdean Na Loine Tuath
the campaign group for rail north of Inverness - lobbying for improved services for the local user, tourist and freight operator

Another important acronym for your collection

GSM-R Global Systems for Mobile Communication - Railway It's radio-based and is a subsystem of ERTMS. Quoting from Wikipedia article, "Britain's GSM-R network should be fully operational by 2013 at a cost of £1.2 billion."