"I wonder how long it will take before TBI puts up its fees to Easy and Go...."
I cannot see TBI leaving itself open to lose the airlines that will be left after the departuress of BA/BM by increasing fees. It may even lead to a reduction in fees in return for a long term contract between TBI and easyJet/Go.
Will the departures of BA/BM leave easyJet as BFS biggest user?