We will be visiting Great Britain in September and want to take the Caledonian Sleeper train from Edinburgh to London. Will likely have a BritRail pass.
I have been doing some research. According to the Man in Seat 61, in order to make a sleeper compartment reservation on this train with a pass, one can only do so by calling from overseas (not toll-free) or while in Britain. No mention of using the internet or anything.
Does anyone know if this is correct and if there are other ways to book? Would prefer to reserve before the trip starts but not have to pay for a pricey long-distance call.