Originally Posted by
TabTraveller
It's a faff but enter T5 using your first BP, take the train to C, come back through immigration to departures or flight connections using BP2 and voila you are airside with conformance met on two flights. I'm not saying this is sensible or rational but it can be done lawfully and without breaking rules.
Sounds quite desperate, and a lot of faff just to get in to a lounge. I would have thought one would be better off spending £25 and the cash equivalent of the 7750 avios in one of the places in T5 to get something to eat and drink.