Rory Stewart has accused London mayor Sadiq Khan and his predecessors of living in ‘La La Land’ on housing delivery after failing to meet their own targets for virtually the whole of the last two decades.

The former international development secretary of state, who is challenging Khan as an independent candidate to become mayor, told London First’s annual housing conference that Greater London Authority’s housing targets have been missed in 19 of the 20 years since it was established in 2000.