Servisair have the FlyGlobespan contract for the Toronto (Hamilton) flights.
Flight operates outbound and inbound via Stansted which is abit odd.
I thought this flight was originally planned STN-'X'-YHM-'X'-STN. Where 'X' is a destination dependent upon the day of the week ie NCL, EDI, CWL, LPL or where ever.
So what you are saying is that the routing is YHM-STN-'X'-STN-YHM i.e. the GSM 757 is YHM based ?