Originally Posted by
demonlegs
No details are provided and we’ve been inconveniently booked 24 hours later.
Welcome to Flyertalk and welcome to the BA forum.
I don't know the reason but it's a 789 service so I suspect there is a shortage of aircraft, or possibly crew - there has been a lot of disruption over the last 7 days.
If you want - or can - go on the Virgin service at 12:20 today you should call up now and request it. There is also a later United service. If you already accepted the new timetable (e.g. via the App) then you can't do this, you only get one shot at this. If you accepted not knowing about the alternatives you can ask BA to review it - the agent will have to talk to their supervisor in that scenario.
More information here:
Disruption Assistance thread - signposts and what you need to know