Proportunity, founded in 2016, provides second-charge top-up loans to help buyers leverage larger lending deals, with deposits as low as 5%.

The loans sit alongside a traditional mortgage in a similar way to the government’s Help to Buy scheme, however, interest rates on these top-up loans are between 8.49% and 9.99% for the first five years.

On its latest move, Proportunity head of intermediaries Paul Lewis says: “This partnership is good for Kensington, good for Proportunity and, more importantly, good for the borrower.

“Kensington Mortgages is known as a leader in the specialist lending market, and its forward-looking approach makes it stand out still further as a lender who will reach out to credit-worthy borrowers with real and practical solutions.”

And Kensington Mortgages new business director Craig McKinlay adds: “This innovative shared loan from Proportunity fills a much-needed gap which will increase in importance as the Help to Buy scheme tails away next year.

“There is a real need to help people who only have a small deposit and don’t have the luxury of a parent or grandparent to help them onto the housing ladder or to move home, this partnership with Proportunity means we can do that.”

In late October this year, Proportunity announced it had secured £105m of investment via its latest funding round.