I'm seeing similar performance on BA11 (LHR-SIN) which I am due on next week. Hasn't been on-time for a few weeks.
I guess this is late departure from LHR coupled with longer flight times avoiding Pakistan (and now Iran?).
Oddly FR24 briefly showed a B744 scheduled on Monday which worried me a bit, until about an hour before departure when it reverted to A388. That part will be filed under the "FR24 isn't
always often accurate with airframe allocation" I presume?
Could do with the timing improving though, don't want to miss evening cocktails and canapés at the Intercontinental!