I think CAX dose has potential, if a london flight was to start (hopefully not by someone like eastern withtheir business only prices) it could be marketed as a short break destination owing to its proximity to the lakes and south west scotland. No one is going to fly london to NCL, hire a car drive 60 miles along the A69 to carlisle then a further 20 miles into the lakes for a night in a B&B, but an hour from LGW or LTN might be tempting.