Martin384,
I would try going down the CTC McAlpine route, I fly from Glasgow and 3 students from my club have been offered sponsorships in New Zealand (flying for EasyJet and Thomas Cook). It would be adviseable to go up for a trial lesson, just to see how it suits you, however I would not spend too much money gaining hours for your PPL as CTC training starts you back at the very beginning and then all the way to ATPL.
Flying is a little bit cheaper from PIK, but from GLA you get the experience of a busier controlled zone as well as a busier ATC, plus the views over Loch Lomond and beyond!!
Best of Luck!