I was booked on LGW-LPA in November and got the cancellation email.
Just phoned BA and they have moved the route to LHR instead. So there is now a weekly LHR-LPA throughout the winter timetable, whereas previously it was LGW more frequently. LHR service runs every Saturday only.
They let me switch my flight to LPA-LHR instead, but it's shortened our holiday by 2 days. Annoying.