The most senior British intelligence official, appointed yesterday to oversee MI5, MI6 and GCHQ, has a website revealing his home address, phone numbers and private photographs of himself, family and friends. Alex Allan, 56, is the new head of the Joint Intelligence Committee (JIC) with access to sensitive documents and information regarding anti-terrorist operations. But the details on his website, described by a security official as "a serious breach", reveal him as a devoted fan of the American rock band Grateful Dead and a keen cyclist who once windsurfed to work in Westminster during a train strike. The security breach,...