… About 96,000 households are unable to afford homes at the market rate, either to buy or rent, Savills said, with the vast majority in London and the south. It said varying approaches were needed to address the shortfall in different parts of the country: low-cost rented homes were needed more in markets in which incomes were smaller, while a mixture of homes, including shared ownership, would help in more expensive areas.

In London, 20% of the households affected have incomes above £35,000, Savills said, while the same proportion earn less than £10,000.

Over the past three years, 55,000 fewer affordable homes have been built each year than were needed, the research found. Although 42,500 households in the capital required below market rate housing, only 8,800 affordable homes a year had been delivered. In the south outside London, 15,500 affordable homes a year were being built while 34,100 were needed.

Meanwhile, in the north of England, low incomes were locking out 9,600 households a year, with 8,900 homes being delivered.

A speech by the prime minister, Theresa May, at the Conservative party conference in October made a commitment of £2bn over four years to fund social housing. However, to house 100,000 emerging households over this period would need funding of £7bn a year, Savills said.