Hi Marie
Your tour manager will be Jaqueline O'Donoghue and she will meet you at check-in as she is flying out with you.
The lounge at Terminal 4 isn't available at the moment (and Terminal 5 doesn't have one), so if you are flying from one of those terminals you won't have lounge access. Lounges at Terminals 1,2 and 3 are available as usual.
I think your terminal is Terminal 4 so you won't have lounge access. If so, you will be eligible for a compensation payment.
To find out which terminal you are flying from, click on this link and enter your airline and destination airport - it's very useful:
http://www.heathrowairport.com/portal/page/Heathrow%5EGeneral%5EFlight+information%5EWhich+terminal?/
Kind regards,
Olly, your editor