An environmental charity have revealed who they believe are the greenest candidates in the London elections.

Friends of the Earth asked four mayoral candidates and the five representatives standing for the Greater London Assembly (GLA) in Enfield and Haringey what their position is on 10 key environmental issues.

These were: Clean up London’s air, make cycling safer, curb aviation pollution, protect green spaces, eradicate cold homes, build new homes fit for people and planet, renewable energy, stop funding fossil fuels, no fracking in London, and making the city a “climate leader”.

For the GLA, the top scorers were Nicholas da Costa (Liberal Democrats), Ronald Stewart (Greens) and Neville Watson (UKIP) who said they backed all 10 proposals.

Joanne McCartney (Labour), said she backed nine of them and would lobby for strong environmental controls on Gatwick, her preferred choice of airport for expansion.

Linda Kelly (Conservative), said she supports six of the policies outright, two partially, and backs more airport expansion outside of London.

For the four mayoral candidates quizzed, Lib Dem Caroline Pidgeon and Green Sian Berry both scored 10, while Labour’s Sadiq Khan got eight after backing Gatwick’s expansion, with Conservative Zac Goldsmith scoring seven.

Friends of the Earth said the candidates asked have all signed up to strong policy on issues which matter to their supporters, including powering London with clean energy, ensuring new homes are built to good standards, and protecting our green spaces.

But they said both Mr Khan and Mr Goldsmith need to tighten up in some areas, including cleaning up London’s dirty air.