Originally Posted by
KARFA
depends where they arrive. Other airports exist around London - and tbh are preferred for VIPs. For example, the US president will most likely use Stansted not LHR. Northolt and Brize could be used too.
the reality is all airports will be used, and this will include LHR and LGW given the number of heads of states.
If a delay can’t be tolerated, what would the OP do if there was a delay for another reason? They may wish to change flights anyway, but that will likely incur a change fee which BA is unlikely to waiver unless they know there will definitely be a delay/cancellation.