Diary: Westminster Attack

Sadiq Khan, Mayor of London, was impressive this morning on the radio, the day after an attempted attack on the UK Parliament in which young overseas visitors were mown down on Westminster Bridge by a crazed motorist. The attacker then stabbed a police officer. Khan spoke clearly and with pride and authority on the issue of London being a great city because people here like to celebrate their differences with openness and tolerance. He also talked about being a Muslim and about the British tradition of the citizen police officer and 'policing by consent’.