Reading the recent posts I think there was a typing mix up between AMS and LGW during the exchanges and the speculation was really about Jet 2 coming off AMS and whether they or EZY would restart it. The June statistics seem to indicate that Jet 2 were carrying about 5,000 pax a month on the route.
I don't think there is any question at the moment of either Jet 2 coming off LGW or BA returning to the route.