As Clematis says, being appointed by Ryanair will cost Groundstar a fortune in penalty payments - I'm even willing to bet that it will sink them before the year's out.
When GO transferred from Servisair to Groundstar over a year ago the difference was enormous....Groundstar were a helluva lot worse, and nothing much has changed.
Morale at STN is at rock-bottom, and a recent decision by Groundstar to make 20 staff redundant was reversed after pressure from GO management - but it's the same old story: big-shot airline managers congratulating themselves on their ruthless negotiating skills, contractors willing to bid below cost just to get the business, and everybody losing in the end, one way or another.