I see where you are coming from MarkL, but the problem is lack of Airbus aircraft due to problems with a new engineering computer system.
The 4 321’s don’t cover the shortfall of 320’s and 319’s at LHR so a 737 has been brought in. The Titan wet-lease has to be kept for a little longer anyway, and is for some reason cheaper if it operates from LGW, so it was sent down there and the 737 kept at LHR.
The idea of a Airbus fleet at LGW has been put on hold for the forseeable future.
1L.