This was my husband's story. We were trying to use the short-lived BA checkin station at the LHR Sofitel. After waiting for a lengthy time for an entire soccer(football) team to check in ahead of us we gave up. We were running late by then and left the Sofitel minus my husbands new Patagonia expensive jacket. We were headed to Iceland. This was his only jacket. Things are very expensive in Iceland. After clearing security dawned on my husband that he left jacket. Said jacket was left across the street at the BA checkin at Sofitel outside the security, outside the airport. He went up to the information desk right after security. He explains the situation to the multitude of security agents hanging out there. One security officer offers to run to the BA checkin at Sofitel and retrieve his jacket. In a really short period of time they come running with the jacket. NOW that is good security LHR. We did push the smiling button and wrote a commendation for the security officer. We love the UK! I can't imagine that happening at a big city airport in the USA.