I am checking luggage - so I will be doing this after clearing customs and receiving my luggage. So the bus sounds like the way to go - although it does seem I could take the Tube and go to Hatton Cross, get off and turn around and go back to Terminal 4. That would work right (and I'm meeting at the Terminal 4 Tube as well). Or is ht 482,490, 724 bus still the way to go?