The Conservatives plan to open a second headquarters in Leeds, the party’s co-chairman will announce later.

The new HQ – a northern counterpart to Conservative Campaign Headquarters in London – is expected to open next year, Amanda Milling will say, as she opens the party’s “virtual conference”.

Some MPs have urged the PM to set out a broad post-Brexit vision for the party.

It comes as Boris Johnson has promised low-deposit mortgages to help young people get onto the housing ladder.

In an interview with ahead of his party’s four-day conference, the prime minister said he had asked ministers to work up plans for encouraging long-term fixed-rate mortgages with 5% deposits.

“We need mortgages that will help people really get on the housing ladder even if they have only a very small amount to pay by way of deposit, the 95% mortgages,” he said.

“I think it could be absolutely revolutionary, particularly for young people.”

The Conservative Campaign Headquarters, in Westminster, London, is where general election campaigns are run.

It was known for many years at Conservative Central Office.

According to BBC political correspondent Iain Watson, it houses press officers who undertake the more political tasks which civil servants cannot do – including attacking opponents and rebutting opponents’ attacks.

It also liaises with the “voluntary party” – the grassroots foot soldiers – and raises funds for national campaigning.

The Conservatives argue that the new Leeds headquarters will reinforce their commitment to deliver for those in northern constituencies who voted the party for the first time at the general election in December.

“This new headquarters will provide the party with a base at the heart of the blue wall,” Ms Milling will say.

“Because we’re in it for the long haul. “We’re determined to make the blue wall part of the fabric of our party and our country.