The mind boggles that my nephew, a 19 year old 4th gen Aussie theatre student, on his first OS backpacking trip to UK, spend 4 hours in security interrogation because, Oh me oh my, he only had one night’s accommodation pre booked. Backpacking from day to day. Oh how can you do it? You must be a dangerous person to have such a foot loose attitude to life. Yeh him and 100,000 other young people moving around the planet every day. Get a grip Heathrow.