The mayor of London, Sadiq Khan, has refused to give ground on key areas of the draft London Plan, including architect retention clauses and building on the green belt.

But he accepted his 10-year housing target would have to fall by more than 100,000 because the draft plan relied “unrealistically” on the potential of small sites to provide enough land.

The 500-page new London Plan was published in draft form in November 2017 and was warmly received by architects who hailed its focus on improving the quality of new developments through the retention of architects and early design review.

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