……."It is almost certain that Easterly operations will be in-use, and from approximately 12:45z-14:45z, BPK, DET & ULTIB SIDs will be prohibited. Arrivals and other SIDs will be unaffected. Our departures originally planned to use these SIDSs will be replanned accordingly. In the event of a missed approach, pilots can expect an early turn to be assigned by ATC to avoid central London.
In the highly unlikely event that Westerly operations occur, in which case air holding can be expected, and in an abundance of caution, additional 'Extra' holding fuel will be provided for flights which arrive from 12:00z-17:00z, along with a mixture of diversion airfields being assigned.

We expect the effect on our operation to be minimal tomorrow, however at a time of such national importance, we want to ensure we are prepared, with suitable options available if unexpected delays
occur…..