Times (UK): At 11.49am yesterday, the departures lounge at Heathrow terminal 5 seemed unusually swollen with travellers shuffling around in the check-in area. A clue to what was up was the number of people staring guiltily at the ceiling, of eyes meeting darting eyes, and an atmosphere prickling with a sense of expectation. Precisely a minute later, a shout went up as overcoats were wrenched off and thrown into the air. A Japanese couple looked on bemused as the terminal erupted around them. …