Travellers from more than 40 red list countries will be processed at Terminal 3.
The move aims to separate red list arrivals from those from amber and green list destinations.
It comes after concerns were raised about red list arrivals mixing with other passengers in busy arrival halls, with little room for social distancing.
Some 43 countries now feature on the UK government’s Covid red list, including India, Brazil, Turkey, the UAE, South Africa, Pakistan, Bangladesh and the Maldives.
Arrivals from red list destinations must self-isolate for two weeks in government-appointed hotel quarantine facilities.
