What types of £1 million+ mortgages are private banks offering wealthy borrowers in 2026?

Private banks including Investec, C. Hoare & Co, Coutts and Barclays Private Bank are offering increasingly sophisticated mortgage arrangements for wealthy borrowers, high earners, business owners and international clients.

While mainstream banks typically concentrate on standard residential mortgages, private banks can offer greater flexibility for borrowers looking for £1 million, £2 million, £5 million or even £10 million-plus mortgages.

These mortgages can be particularly attractive to borrowers with complex incomes, substantial assets, multiple properties, partnership earnings, business interests or irregular bonuses.

Recent examples of private bank lending include an £8 million mortgage at a high loan-to-value (LTV), a £2.5 million revolving loan for a second-home renovation and £3 million of borrowing through a family investment company.

The arrangements demonstrate how private banks can consider a client's wider financial position, rather than simply assessing their salary and monthly outgoings.

What types of mortgages are private banks offering?

Private banks can provide a range of specialist mortgage and property finance arrangements, including:

• Large residential mortgages: Borrowing of £1 million to £10 million or more for high-value properties.

   

• High-LTV mortgages: Large loans with relatively small deposits, sometimes up to 85% LTV in suitable cases.

• Interest-only mortgages: Lower monthly payments with an agreed strategy for repaying the capital.

• Part-and-part mortgages: A combination of interest-only and capital repayment borrowing.

• Revolving mortgage facilities: Flexible arrangements allowing borrowers to draw down, repay and reborrow funds.

• Multi-property mortgages: One facility secured against more than one property.

• Company and trust mortgages: Specialist lending for family investment companies, trusts and other qualifying structures.

• Complex-income mortgages: Assessments incorporating partnership drawings, bonuses, carried interest, equity awards and investments.

• International mortgages: Financing for qualifying overseas borrowers and properties.

• Offset and investment-backed lending: Facilities enabling wealthy customers to use savings or investments to support their borrowing.

Not every private bank offers every arrangement, and eligibility, pricing and security requirements vary considerably.

Investec arranges £8 million mortgage for North London property purchase

Private bank case study 1 — published 6 October 2026

Investec recently highlighted an £8 million mortgage arrangement for a senior professional at an international firm purchasing a five-bedroom family home in North London.

The borrower wanted to buy a £5.5 million property while refinancing their existing £4.5 million residence and raising additional capital to cover transaction costs.

The case was particularly challenging because the client received most of their income through partnership drawings rather than a conventional salary.

Investec considered their income, assets, future earnings and longer-term property plans. It structured the £8 million facility into four separate parts, secured against both properties.

The bank reported an initial LTV of 85%, with a plan to reduce borrowing to 70% over time. The stated combined property value of £10 million would equate to an aggregate 80% LTV, so the published 85% figure may reflect a different valuation or lending calculation.

The structured facility enabled the borrower to complete the purchase within the required timescale.

Why this matters: Wealthy professionals with complex partnership earnings may be able to secure large mortgages even when standard affordability calculations do not fully reflect their financial position.

C. Hoare & Co. provides £2.5 million revolving mortgage for second-home improvements

Private bank case study 2

C. Hoare & Co., one of the UK's oldest private banks, has demonstrated how revolving mortgages can provide flexibility for wealthy property owners.

In the case study supplied by the bank, a customer wanted to refinance an existing revolving loan and increase their borrowing facility to £2.5 million.

The money was needed to fund improvements to a recently purchased second home, together with additional funds to cover unexpected costs.

The customer expected to repay the borrowing using cash reserves from an overseas business. Alternative repayment options included selling property or using other cash reserves.

C. Hoare & Co. agreed a £2.5 million, five-year interest-only revolving facility at 40% LTV, secured against the borrower's main residence and second home.

The customer could withdraw funds, repay them and borrow again as needed. The variable-rate arrangement also allowed repayment without early repayment charges.

Why this matters: Revolving facilities can be useful for borrowers funding significant renovations, managing irregular cash flows or expecting substantial funds from a future business transaction.

C. Hoare & Co. agrees £3 million interest-only mortgage for a family investment company

Private bank case study 3

Another C. Hoare & Co. case involved clients looking to release £3 million from two personally owned residential properties and reinvest the capital through a family investment company (FIC).

A traditional affordability assessment based only on rental income would have been challenging, because the income from one property was insufficient to support the proposed borrowing independently.

However, the family investment company held substantial liquid investments and generated investment income.

The bank agreed a £3 million interest-only mortgage over ten years at 60% LTV, supported by personal guarantees from the company's two shareholders.

The planned repayment route was refinancing at the end of the term, with the potential sale of investments providing an alternative.

Why this matters: Some private banks are prepared to consider the wider financial resources of family investment companies, rather than relying exclusively on property rental income.

C. Hoare & Co. generally looks for new customers with wealth of at least £10 million and borrowing of at least £1 million.

Arbuthnot Latham arranges £9 million mortgage refinancing for property investor

Private bank case study 4

Private bank Arbuthnot Latham arranged a £9 million refinancing facility for an entrepreneur with a property portfolio valued at £18.3 million.

The portfolio comprised six properties across London and the Home Counties, containing 40 income-producing units.

The borrower needed to refinance their existing mortgage after their lender withdrew support for offshore ownership structures.

Arbuthnot Latham arranged a £9 million fixed-rate facility at approximately 49% LTV, using a newly established UK special purpose vehicle (SPV).

Why this matters: The case demonstrates how private banks can provide substantial mortgage finance for wealthy property investors with complex ownership arrangements that mainstream lenders may struggle to accommodate.

Barclays Private Bank arranges international finance for a Swiss ski chalet

Private bank case study 5 

Barclays Private Bank has published an example of its international property financing capabilities involving a London-based international client purchasing a ski chalet in Verbier, Switzerland.

Rather than considering only UK earnings, the bank assessed the customer's assets and income streams from multiple countries to develop a bespoke financing package.

Barclays Private Bank offers tailored repayment and interest-only mortgages, with fixed and variable interest rates. Its published international property lending locations include the UK, Crown Dependencies and selected areas of France, Monaco and Switzerland.

Why this matters: International borrowers may benefit from private banks with expertise in assessing overseas income, foreign assets and cross-border property finance.

Coutts offers large mortgages with no published upper borrowing limit

The private bank confirms it can offer:

• High-LTV residential mortgages with no specified upper borrowing limit.

• Interest-only mortgage terms of up to 35 years.

• Mortgages assessing bonuses, carried interest and equity income.

• Offset mortgages using qualifying deposits in sterling, euros or US dollars.

• Lending for international borrowers and specialist property transactions.

• Buy-to-let mortgages for qualifying companies, trusts and special purpose vehicles.

• Mortgage reserve facilities allowing customers to access borrowing within an agreed arrangement.

Coutts also says borrowers with more straightforward requirements may be able to access lower-priced NatWest mortgage products through their Coutts adviser.

This highlights an important consideration: a private bank is not always the cheapest option, even for wealthy customers.

Private bank mortgage comparison – what are the lenders offering?

The following table summarises the published specialist lending capabilities of four prominent private banks as at October 2026.

Are private bank mortgages better than high street bank mortgages?

Private banks can be particularly useful when a borrower has significant wealth but does not fit standard lending criteria.

However, mainstream lenders such as Barclays, NatWest, HSBC, Santander, Halifax and Nationwide may offer more competitively priced mortgages for borrowers with relatively straightforward circumstances.

Private banks may charge higher arrangement fees, require minimum levels of wealth or income, or expect customers to establish a wider banking relationship.

Some private banks may also seek to manage customers' investment assets, including shares, bonds and other investments. This can be an important consideration for clients who prefer to keep their assets with existing investment managers.

The most suitable solution depends on whether the borrower needs specialist underwriting and whether the additional flexibility justifies the overall cost.

Aaron Strutt, Product Director at Trinity Financial, comments:

"Private banks are offering some remarkably flexible mortgage arrangements for wealthy borrowers, particularly where they have complicated income structures, substantial assets or multiple properties.

"The ability to arrange an £8 million mortgage, combine borrowing across properties or provide a revolving facility that can be drawn down and repaid makes private banks particularly attractive for certain clients.

"We are also seeing lenders take a much broader view of income, including partnership drawings, company profits, bonuses, investments and future liquidity events.

"However, private banks are not necessarily the cheapest lenders. Some mainstream banks offer very competitive mortgage rates for £1 million, £2 million and £5 million-plus borrowing, often with lower arrangement fees and without requiring customers to transfer their investment portfolios.

"The important thing is to compare both the private banks and the mainstream lenders. Wealthier borrowers can sometimes secure a better overall deal by using a conventional bank, even when borrowing several million pounds."

How can Trinity Financial help arrange a private bank mortgage?

Trinity Financial's specialist mortgage brokers regularly help high-net-worth clients, company directors, partners, entrepreneurs and international borrowers seeking large mortgages.

Our brokers can explore private banks and mainstream lenders to establish which institutions are most suitable for a client's financial circumstances.

We can help with £1 million-plus mortgages, £5 million-plus borrowing, interest-only facilities, complex income, family investment companies and borrowing secured against high-value residential property.

Whether you are buying a property in London, refinancing existing borrowing or releasing equity from your home, Trinity Financial can assess your options.

Speak to a Trinity Financial adviser today

The mortgage market moves fast — and the right advice can make a significant difference to the rate and deal you secure. Get in touch with our team to discuss your options.

Call Trinity Financial on 020 7016 0790 to secure a private bank fixed or tracker rate mortgage, book a consultation, or use our appointment calendar

The information contained within was correct at the time of publication but is subject to change. It is for general information purposes and is not advice.

Your mortgage is secured on your property. Your property may be repossessed if you do not keep up repayments on your mortgage

Research sources: Investec case study, C. Hoare & Co. lending, Barclays Private Bank, Coutts mortgages, Arbthunot Latham.