So the Pilot flew into LHR from Cape Town at 0630 (based on assumption the times have not changed to those today) and was due to depart from LGW at 2020 (assume 1 hour report 1920) so to be safe leave LHR at 1720?
If I was BA i'd be wondering should we allow this practice and be going through tickets and rosters for commuters.
#can of worms