Islay Robinson examines rising demand for seven-figure UK remortgages and why larger borrowers are considering a wider range of lending options.

Demand for larger UK residential remortgages is rising sharply, with seven-figure cases accounting for an increasingly large share of the opportunities Enness Global handles.

Between 1 January and 11 September 2026, Enness recorded 28 new UK residential remortgage opportunities worth £1 million or more, double the 14 recorded during the same period in 2025. Overall UK residential remortgage opportunities increased by 23%, from 53 to 65.

As a result, mortgages of £1 million or more represented 43% of Enness’s remortgage opportunities during the period, compared with 26% a year earlier.

The growth extends beyond remortgaging. Across the wider UK residential mortgage book, opportunities worth at least £1 million rose 46%, from 50 to 73. Total residential mortgage opportunities grew by 17%, from 200 to 234, meaning seven-figure cases increased their share of the overall book from 25% to 31%.

The biggest volume increase came from mortgages between £1 million and £2 million. Opportunities in this range rose by 53%, from 34 to 52. At the higher end, opportunities above £2 million increased by 31%, from 16 to 21, while £2 million-plus remortgage opportunities rose by 71%, from seven to 12.

These figures relate to opportunities recorded by Enness’s London and UK business rather than completed transactions, so they should not be interpreted as a measure of the wider UK mortgage market. They do, however, indicate how the borrowing requirements of higher-value clients are changing.

One notable development is that £1 million is becoming less of a clear dividing line between conventional mortgage lending and private banking. The best route increasingly depends on the borrower’s wider circumstances rather than simply the mortgage size.

For some borrowers, mainstream lenders and building societies can provide suitable solutions for larger mortgages. Others may benefit from private banking where they have complex income structures, significant investment assets, substantial existing borrowing or a more unusual approach to repayment.

There are also several reasons why a borrower may choose to remortgage a substantial property loan. Some are reaching the end of fixed-rate arrangements agreed several years ago, while others are restructuring existing debt, releasing capital or seeking greater liquidity without having to sell investment assets.

For high-net-worth borrowers, refinancing is therefore not always simply about securing a lower interest rate. The wider objective can be to restructure liabilities, preserve liquidity and ensure the financing remains aligned with the borrower’s broader financial position.

The increase in seven-figure remortgage opportunities also reflects greater competition across the lending market. Mainstream lenders, building societies, private banks and specialist providers have different approaches to larger loans, with individual underwriting criteria varying considerably between institutions.

For borrowers approaching the end of a fixed-rate period, reviewing the available options early can therefore be particularly valuable. Larger mortgages often involve more complex considerations, and the most suitable lender may depend on factors extending well beyond the property itself.

For me, the key takeaway from these figures is that the seven-figure mortgage market is becoming increasingly diverse. A £1 million mortgage no longer automatically places a borrower into one particular category of lender, and understanding the full range of available financing options can be just as important as the headline rate.