Mortgages Over £1 Million UK Guide

In the UK, a mortgage above roughly £1 million is classified as a large loan by most lenders. Above £2m it's almost always private bank or specialist lender territory. These cases are underwritten by hand — there's no automated yes/no — and rates are negotiated rather than published.

The same is true the other way round: if the property itself is worth over £1m, even a relatively small mortgage on it can fall under high-value lending rules, with stricter surveys, valuation requirements and stamp duty bands at 10% (over £925k) and 12% (over £1.5m).

Lenders fall into three groups:

• High-street large-loan desks: Halifax, NatWest, HSBC, Nationwide and Barclays all have dedicated teams that handle loans from ~£1m to ~£5m on standard income.
• Private banks: Coutts, Weatherbys, Arbuthnot Latham, Investec, Hampden & Co, HSBC Private and Barclays Private Bank lend bespoke, often requiring a relationship and assets under management.
• Specialist lenders: Vida, United Trust Bank, LendInvest and others sit in the middle for non-standard income, complex structures and quicker turnarounds.

Most private and specialist lenders only work through brokers — you cannot apply direct.

Under FCA rules, a borrower qualifies as high net worth (HNW) with £300,000+ annual net income or £3 million+ in net assets (excluding main residence and pensions). HNW status lets lenders opt out of the standard Mortgage Conduct of Business affordability rules and apply bespoke underwriting instead.

In practice, that means higher income multiples, more flexibility on the source and shape of income, and the ability to lend against complex ownership structures — SPVs, trusts, offshore vehicles and family investment companies.

See our full High Net Worth Mortgages guide for the qualifying detail.

The reason £1m+ borrowers struggle on the high street isn't usually the loan size — it's the shape of their income. Specialist lenders are comfortable with:

• Bonuses and commission — 100% counted by some lenders, even where banks discount to 50%
• Carried interest and performance fees — common for private equity, hedge fund and venture partners
• RSUs, stock options and vesting share schemes — treated as income by tech-friendly lenders
• Dividends and retained profit — for company directors drawing modest salaries
• Trust distributions and family office income
• Overseas earnings — multi-currency salaries, expat income, non-dom arrangements
• Portfolio / investment income — rental, fund and dividend yields

Each lender treats these differently. A good broker knows which lender to take which income story to.

Above £1m, expect:

• 75% LTV as the standard ceiling — 85–90% is achievable with the right lender
• Larger deposits often unlock significantly better rates
• Private banks may offer interest-only with an investment portfolio as the repayment vehicle
• Bespoke pricing — your final rate will usually beat anything you'd find publicly listed

For LTV basics, see our Loan-to-Value Explained guide.

Even with a modest mortgage, a £1m+ property triggers extra considerations:

• Stamp Duty at 10% on the slice £925k–£1.5m and 12% above that — see our Stamp Duty Guide
• Full structural surveys are usually required, not standard valuations — see Property Surveys
• Listed buildings, large grounds, equestrian property and farmland all need specialist lenders
• Insurance is more complex — high-value building, contents and liability cover usually sits with specialist insurers

If your wealth is locked into investments you don't want to liquidate, asset-backed lending (sometimes called Lombard lending) secures the mortgage against your investment portfolio rather than purely against the property or earned income.

• Borrow without triggering capital gains tax on a forced sale
• Access very large loans relative to income
• Keep portfolio invested and compounding
• Often available on interest-only terms

For loans above £1m, the difference between a generalist and a specialist broker can easily run to tens of thousands of pounds over the term — and the difference between a deal happening at all or being declined.

A specialist will:

• Place your case with the lender most likely to say yes at the competitive rate
• Translate complex income into the format underwriters need to see
• Negotiate directly with private bank relationship managers
• Co-ordinate with your accountant, solicitor and wealth manager

At The Mortgage Genie we work with 90+ lenders through the Primis network, including private banks and HNW specialist desks not available on the open market. Our advice is free initial advice — see why how transparent broker fees work.