Got an SMS this afternoon saying flight to Terminal 5 had been cancelled. A request to call BA at my own expense.
Rapid call to BA asking for a rebooking on an earlier Malév flight to Gatwick, followed by a semi-run to the hotel.
Panic rush to airport; in the end, got there too early!
Checked in; panic over for the moment.
I’ll have ‘fun’ when I get back checking whether I can claim compensation - I think I can. Normally I like flying with BA, but this will make me think twice in future. I’ll certainly be avoiding T5 for a while, if at all possible.