2011-07-16/17 Sat/Sun - Dunwich Dynamo DD19

The Norwich to London train (I know it far, far too well) has a guard's carriage. It might officially take six, but you'd easily get more in there. I've also never reserved a space for a bike, in maybe 100 journeys. Obviously DD day is different, but I reckon they'd let you put 20 in there if you were nice and polite.
Cheers Sparky. Much appreciated.