T Radalt,
BBC news reports:
There is heightened security and a heavy police presence at Wembley Stadium, where up to 63,000 people are attending the memorial concert for Diana, Princess of Wales. Security is also to be stepped up at the Wimbledon Championships, in south-west London, when the tennis tournament resumes on Monday.
So are you saying this reaction to a critical threat is also not warranted? All this would do is put people off Wembley concerts and Wimbledon - that's hardly gonna crumble the the nation's economy/safety/confidence is it?