Man arrested in Buckingham Palace grounds after scaling wall

A man has been arrested in the grounds of Buckingham Palace, the home of Britain's Queen Elizabeth, after scaling a perimeter wall, London police said on Thursday. "I am content that our security measures worked effectively on this occasion and at no time was any individual at risk," Commander Adrian Usher, head of London police's Royalty and Specialist Protection unit, said. Neither the police nor Buckingham Palace would confirm whether the queen or other members of the royal family were at the