Queen Elizabeth offers deepest sympathy to victims of London attack

Britain's Queen Elizabeth sent her condolences on Thursday to those affected by the attack on the British parliament conducted by a lone assailant who killed three people and injured 40.

"My thoughts, prayers, and deepest sympathy are with all those who have been affected by yesterday's awful violence," she said in a statement.

The Queen was due to officially open the new headquarters of London's police force on Thursday but will now do so at a later date.