The number of homes built in London for social rent fell by two thirds in 2017/18 compared with those delivered in 2015/16, while the number of affordable homes delivered via section 106 over the same period rose by 70%, according to new research.

The latest London Residential Development report from agent Knight Frank said the proportion of shared ownership had more than doubled in three years. This trend was likely to continue as land prices took time to adjust to the new affordable housing threshold policy, the report added.

The challenge to increase delivery of affordable housing via section 106 was likely to grow amid a wider environment of declining residential construction, Knight Frank said.