Watch this space!
Well despite the grim foreacast it all went well and we arrived at Carlisle midday on Saturday. You can see the video diary here:
The main challenge was getting Virgin to allow us to put the tandem on the train. You are allowed to put tandems on Pendalino trains despite what the station staff may tell you. Although they can in tehory ask you to book this (free) 2 hours in advance.