Those suggesting Ryanair will move from PIK to GLA need to get a serious understanding of arithmetic. If FR pay PIK 50p or £1 ish per head, and if the rate at GLA is £15 or £17 ish per head, then even IF GLA charge half price, then FR will still pay 7 to 15 times per head to use GLA instead of PIK. And if GLA charge FR half price, what will BA, BMI, Easyjet, Flybe et all want ? PIK is 30 miles nearer most FR destinations, ie 30 miles less flight time and fuel burn. Often FR land straight in on runway 31, and depart straight out on 13. That in itself is an enormous fuel and cost saving.
Maybe GLA would be better employed getting Brussels Airlines to Brussels, Swiss to Zurich, and Lufthansa to Munich, instead of leaving myself and others to drive to Manchester ?
When I worked for Air Canada at PIK in those summers we peaked at handing 14 Air Canada flights in one day. GLA now can't offer 1 Air Canada flight.
So maybe GLA should focus away from Ryanair and PIK's rail station and look at what business they should be offering but don't.