Flying SEA-LHR-VCE in March, in Club World and Club Europe. The scheduled connect time is 1 hour 15 minutes, which is a “legal” connection time within T5, but shorter than we would like. We have transited airside through Heathrow several times before ( with more time for the transfer) and know to follow the purple Flight Connections signs. We will have our bags checked through, but I know we will have to go through the T5 security before proceeding to the gate. I assume the security check is in 5A? We will be able to use the priority line, flying business class, right?

What can we do to expedite the process, besides get off the plane as quickly as we can, and sprint? Will the cabin flight attendant be able to see our departure gate and let us know?