Britain’s security services have been put on their second highest state of alert amid intelligence of a possible al-Qaeda attack, the BBC has learned. The internal “severe general” alert is said to be unconnected to US President Bush’s forthcoming UK visit. It follows warnings about plans by al-Qaeda supporters from North Africa. The alert means security will be extra tight around potential targets. Sources say no attack is imminent, and there is no intelligence of a specific target. Full Story