Not just the gates at LHR…. I’ve been on early arriving BA flights into T5 which were received fine around 05.00 but he rail shuttle and inter-terminal transfers were not functioning. We couldn’t even get to immigration to take advantage of the early touchdown. Airport staff need to remember that their customers are delivered fatigued, jetlagged and generally miserable, keen to get that last hurdle behind them.
But tempers fray very quickly, so staff must remember who are the customers, and who has the duty of care.