Thanks to SeanM1997 on Twitter, BA restart MAN-LGW 1 x daily from 28th March.
NEW ROUTE
British Airways - Manchester to London Gatwick. Flights start 28 March 2021
BA2509 MAN 0700-0815 LGW (Mon, Wed, Thu, Fri, Sat & Sun)
BA2509 MAN 0710-0825 LGW (Tue)
BA2508 LGW 0945-1055 MAN (Tue, Wed, Thu, Sat & Sun)
BA2508 LGW 0955-1105 MAN (Mon & Fri)
https://t.co/vw5v25i39s