Ken Livingstone

I undertake that, in the exercise of my functions of that office I will have regard to any guidance with respect to ethical standards issued by the secretary of state under Section 66 of the Greater London Authority Act 1999.

I want to tell mayors, county chiefs and heads of big companies: don't just chase GDP growth; don't chase the biggest profits at the expense of our children and grandchildren and at the cost of sacrificing our ecological environment.

And I think that still is true of this business - which is basically research and development - that you probably spend more time in planning and training and designing for things to go wrong, and how you cope with them, than you do for things to go right.