TimV
Without specifics it's dissicult to answer, but I will put forward some ideas.
I operate out of LHR. Haven't done domestics for a while, but Heathrow actually hasn't been too bad recently. Certainly July was appalling, but August was way better with the notable exception of the 31st when the airport was totally closed for 20 minutes and then only single runway for about 90 minutes due to the Royal Brunei emergency return after an engine failure.
My personal punctuality for August was about 60% with 80% getting away within 15 minutes of schedule.
I don't know what reasons you were given for your late departures - but my recent delays have usually involved passengers checking in bags and then not turning up. That is 15-20 min delay straight off. A few ATC delays, and one 3hr delay 'cos the aircraft was broke - but none of these are LHR only problems.
Keep the faith
T'bug
