David,
Sorry, but there really is not the population around here to justify a service to Spain. NCL, on a good day is just under an hour to drive. Carlisle itself has an population of around 80,000. If we extend that to folk living in a boundary extending to Dumfries, Kendal and Hexham, that increases to about 150,000.
As you say, it's not exactly the richest of places either.
I'd be surprised if a link to SEN works, no public transport to the airport, a train that gets you into central London in just over 3 hours, and who wants to go to SEN anyway?
