It depends on the airline they were travelling with.
T5.
4
You and all Aer Lingus flights arrive in TERMINAL 1.
I think that you've missed the flight!
Join the service at Terminal 5 (typically bound for Cockfosters) and Green Park will be the 19th station you arrive at. It is the station immediately following Hyde Park Corner.
Terminal 1.
Terminal 2.
Approximately 96,000 passengers per day arrive at Heathrow.
Terminal 3
Terminal 4 has more than one post code but the terminal office post code is TW6 3XZ. If you are writing to another organisation within the terminal, so long as you put their correct name on the letter and the above post code, it should arrive safely.
today the olympic torch is in uxbridge
Terminal one for all arrivals from anywhere. "Terminal 2" is simply a check-in area.Calling it a terminal causes a lot of confusion, as once you've checked in there you catch an underground train to terminal one to board your flight. No flights arrive at terminal 2.