What would you do if you were Mayor? How would you make London an even better place to live, work and commute in?
The Centre for London and IPPR are asking Londoners to share their ideas for improving London.
The person with the best idea will be invited to present it to Boris Johnson and Ken Livingston at the London Policy Conference which takes place at Southbank Centre on 12th and 13th December.
Your idea should be related to an area over which the Mayor has control: transport; planning; housing; culture and tourism; environment; economic development and health inequality.
To get involved, all you have to do is submit your idea by twitter using #Ideas4Mayor. Ideas must be received by December 7th.