I was amazed to clear immigration in under 15 minutes this week. Being quick off the plane (and ignoring the passport scanners that never work) helps but given recent events in Paris & Brussels I expected heightened security.
It'll certainly take longer getting back into UK.
Came through yesterday. I was in the immigration queue behind a guy who (earwigging) had recently been to Libya. I switched queues. I think the guy may still be there :lolol:
Yes need an ESTA. £12 online if I recall