There was an area called "The Bike Hut" with a banner proclaiming "We know all there is to know about bikes". Possibly an inappropriate comment. However, i took it at face value.
I asked for a 26 x 1 3/8 tube to be greeted by a look of total incomprehension.
"Wots that then?"
Hmm... possibly not quite ALL there is to know about bikes.