It’s day four - Wednesday 7th May - and Geoff and Vicki tackle fiddly Feniton, accidentally spend an hour more than they planned in Westbury, and visit a little piece of London in deepest Wiltshire. Lympstone Commando station is a special stop that you're only allowed to use if you have business at the military base. There is a gate on the platform with a keycode and a guard, regular people are not allowed to alight there!