Apologies for not being about air transport but National Express seem to have cut short their coach service to London Liverpool Street - it now terminates at Stratford Westfield instead, running with gaps of either 30 or 60 mins between services, depending on time of day
They also still run a coach to London Victoria via Northwest / West London but this now runs with gaps of either 1 hour or 2 hours between services, depending on time of day
The other coach services from Stansted to London were all cut in the spring