Snap! First visit to Crewe yesterday, mainly to see the APT-P, but had a great time also in the Exeter West signalbox watching the guys responding to tricky scenarios thrown at them by the railway simulator.
In the last couple of years we've now been inside an APT-P, the prototype Deltic, and a Vulcan; and stood next to the APT-E (OK, one of those is an aeroplane not a train, but all great British engineering marvels!)