Hi Jan,
I'm on this tour on those dates. Not staying in the terminal itself... Travelodge down the road, so can't really meet you the night before. Would be good to meet up in the morning at terminal 5 if you like. I'm aiming to be there for 7:30/ 7:45. I'll check in and then go straight through passport control etc. Any thoughts for a meeting place/ coffee? I'm really looking forward to it. Look forward to meeting you and the rest of our fellow travellers.
Jan M