I went to Wyton for the Joint Military/Civil Safety Day last October and they were very helpful. As it's near my home base I usually give them a call if I'm doing the "jolly" over Grafham Water and they give a good FIS. The main bonus is that most of their traffic is the UAS Grobs and the based light aircraft so it's a painless way of getting an RAF station in the logbook. It's also VERY long compared to our grass strip. In a Cub in a strong wind you could land and stop literally on the numbers they're so big!