In message , at 22:42:33 on Tue, 17 Mar
2020, Recliner remarked:
I've read on an aviation forum that Heathrow T4 is to be closed and just
used for aircraft parking during the Covid-19 crisis, and T3 may also close
temporarily. All BA's T3 flights will be moved to T5, and other aidlines'
flights will move to T2.

If there are fewer flights then it makes sense to concentrate them on a
smaller number of terminals. And at Gatwick close the North terminal if
there's sufficient capacity at the South terminal for all the aircraft
movements.
--
Roland Perry