British Airways is to move more long-haul flights into Heathrow’s Terminal 5 in early June – the first since the disastrous opening of the facility six weeks ago.

The move will be a critical test of the airport’s ability to cope with a fresh influx of passengers and baggage into T5. It will include the transfer of BA’s most important long-haul route – Heathrow to New York JFK, with eight daily departures.