I am flying Upper Class. Arriving at Heathrow T3 at 7.40am and departing from T3 at 9.40am. CPT-LHR-SFO all Virgin. I have used Flight Connections at Heathrow before and sometimes the security lines are very long (up to an hour). I have used the Upper Class Wing/ Security Channel numerous times before and it is very quick. I was thinking that instead of using Flight Connections I would simply clear immigration (British passport, so very quick) and then go to the Upper Class Wing/Security Channel since there are no queues there. Any thoughts?

I know that is not the recommended approach, but is the UC wing very far from the Transfer /Flight Connections – i.e. would I have to spend an additional 10 or 20 minutes minutes walking around the terminal in order to clear immigration, walk out of arrivals and then up to Upper Class Wing/Security Channel?