Landing at St Athan at 11:03am, arriving from Gatwick is TOM922P "Tomjet 922P" B752 G-OOBN ..it's due to go to Caerdav, presumably for pre end of lease maintenance.
Last revenue service was yesterday, BY4404/5 Gatwick-Kefalonia-Birmingham-Gatwick.
(Thanks to South Wales Aviation Group for details of flight to DGX)