What I remember of when Ken Livingstone was Mayor of London: 2012 Olympics award; pedestrianisation of Trafalgar Square; congestion charging; single rate bus fares anywhere in London.

What I will remember of Boris Johnson's stint: the rail replacement bus service and the near paralysis of London every weekend.

Two contrasting examples of achievement and competence.

Not even with a gun at the back of my head and a butcher's knife arcing over my groin would I ever vote Tory. Living in a Tory run London is hellish enough.