I've got a 10am to 18:20 AA (from JFK) to BA (to BCN), T3 to T3 layover coming. I LOVE the British Museum, so plan to head in on the tube first. I'm trying to strategize how to have proper afternoon tea while in London. The museum has it, but not till 15:00, so that seems too tight as far as getting back to LHR.

The T5 Sofitel has it; is that my best bet? Looks like it may take as much time to get from the hotel through HEX to T123 as halfway out on the tube, depending on how lucky I am with a T5-T123 hex ride after tea.

Any other suggestions?