Airline roulette

In the ongoing saga of getting Younger Son in a position to visit the Hermitage*, we have heard that at least one of his flights (via Heathrow, of course) has been canceled.  Now they're trying to change reservations to another flight...

Hey, have you British Isles folks noticed mention that the coppers have found _any_ explosives in all of their searching?  So far, all I've seen is a tale of sound and fury, signifying nothing.

*Yeah, well, he's supposed to be presenting a paper at a psychology conference, but ya gotta keep your priorities straight.