Early morning delays from LHR
Mrs Mc is on a flight this morning; due to leave LHR T4 at 06:40, took off an hour late meaning she will have almost no connection time at CDG (merciffuly it should be just a 10-minute walk between gates). Checking the departures boards, it appears that all departured this morning from LHR are 30 to 60 minutes late. No fog; almost ideal flying conditions, so why? Nothing posted on the airport website to give any indication