The Spanish consulate in Frankfurt knew we were driving as that was stated on the visa application but were not smart enough to figure out how one could do the round trip with only a single entry!
Err... did you check Multiple entry on the application form and pay the fee?
UK should start the Border control Checks at the home country like the USA. Helps airborne illegals from entering at home base. Once on UK soil unfortunately all sorts of EU rules and regulations start applying. Probably the reason why the aussies intercept and hold them outside their territory