OT I appreciate, but I used something similar at CDG - and it was marvellous.

Slightly pricer, at £250 (albeit the price is the same for upto 3 people), but they took myself and another FTer from the door of the plane, through Border Control etc, then by car to the next Terminal (from T1 to T2a which is usually a train+long walk), back through Security, and into the CX Lounge.

I couldn't fault the service, and would use them again. From the sounds of it, they could show the Heathrow service a thing or two!

I haven't put the name of the service, as I don't want to advertise - but if FTers would like it, please PM me.