The Green Party’s Jenny Jones launched her campaign to become Mayor of London with a warning the mayoral favourites “I know where the bodies are buried”.

In an interview with our newspapers, the former deputy mayor said working with previous mayors Ken Livingstone and Boris Johnson would allow her to scrutinise their words closely.

She said: “Because I have worked with them both [Ken Livingstone and I do know where the bodies are buried and so they stand up on a platforms talking complete nonsense I will be able to draw everybody’s attention to that.”

Ms Jones said her main aim as mayor would be to make London a 'Fair Pay City', starting with a 10:1 maximum pay ratio for employees of organisations within the Greater London Authority (GLA).

She said: “My campaign to become Mayor will be focused on bringing fresh ideas to London. Making the capital into the ‘Fair Pay City’ is just one aspect of our fight for a fairer, cleaner, greener capital.”

Under the plans, which represent one aspect of the party’s mini-manifesto, released on Thursday, those working for organisations such as City Hall, Transport for London and the police could not pay the lowest paid workers less than 10 times the amount of the highest paid.

Ms Jones said said during Boris Johnson’s Mayorship the number of people within the GLA group earning more than 10 times the Living Wage had risen by 56 per cent (from 62 to 97).

She added the chief executive of Crossrail, Rob Holden, earned £857,134: a figure approximately 55 times the Living Wage.

She said: “The Green Party has shown in London and elsewhere that when elected it can reduce inequality, promote fairness and help create a better city. Every vote counts in next year’s elections, with Londoners being able to chose their Mayor and their London Assembly Members - elected under proportional representation.

“The campaign to make London a Fair Pay City shows that as Mayor I would stand up for ordinary Londoners, institute more responsible financial governance of the capital and help create a better place for those who live and visit the capital.”