Just positioned back from the States on a BA flight.
Chatted to flight deck after landing, and they reckoned the same, (which was the first I'd heard of it) over next two years they said that BA shorthaul out of LGW is going to be shutting up shop.
They seemed to reckon most of losses come from shorthaul anyway, and some more major fleet/base changes were in hand.
I see that the LGW Base is now the formal subject of a notice on the CitiExpress Company Management 'Intercom' site.