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When you’re applying for a high-value mortgage — typically £1 million or more — choosing the right route can make a substantial difference in both cost and experience. Many affluent buyers wonder: should I go directly to a private bank, or work with a specialist mortgage broker?

Both options have their strengths. But when it comes to securing the best terms, navigating complex income, or dealing with time-sensitive transactions, the right choice often depends on your specific needs.

At Connect Mortgage Services, we regularly help high-net-worth clients weigh the pros and cons of each path. Here’s what you need to know.

What Is a Private Bank Mortgage?

Private banks cater to high-net-worth individuals and offer a more bespoke banking experience. When it comes to mortgages, this often means:

  • Access to large loan sizes, sometimes with no published maximum

  • Flexible underwriting, especially for clients with complex income or wealth structures

  • Relationship-led service, often tied to broader wealth management goals

  • Opportunities to negotiate rates or terms in exchange for asset transfers

However, private banks typically expect clients to meet certain wealth thresholds — such as transferring assets under management (AUM) to the bank or holding a minimum balance. The mortgage may be part of a wider financial relationship.

What Does a Specialist Mortgage Broker Do?

A specialist broker acts as your advocate in the mortgage process, sourcing and negotiating on your behalf across a wide panel of lenders — including high street banks, private banks, building societies, and niche lenders.

Key benefits include:

  • Whole-of-market access, not tied to one lender or institution

  • Independent, tailored advice based on your goals and financial profile

  • Deep knowledge of lender criteria, including those that accept complex income

  • Ability to compare options across multiple providers to find the most competitive deal

Unlike a private bank, a specialist broker works for you — not the lender.

Comparing the Two: Key Considerations

1. Loan Size and Flexibility

  • Private banks often have no upper limits and can take a more flexible view on loan-to-value (LTV), especially for ultra-high-net-worth clients.

  • Specialist brokers can also secure multi-million-pound mortgages — often by placing them with private banks or niche lenders, but with the advantage of comparing multiple options.

2. Income Assessment

  • Private banks may take a more holistic view of income and wealth, including assets and future earnings potential.

  • Specialist brokers know which lenders — including private ones — are open to retained profits, bonuses, foreign income, or irregular earnings, and they position your case accordingly.

3. Cost and Interest Rates

  • Private banks may offer preferential rates — but often in exchange for asset management or a bundled service.

  • A specialist broker can compare those rates against dozens of other providers, ensuring you’re not overpaying or locking in unnecessary commitments.

4. Time and Convenience

  • Private banks typically offer a very high-touch, concierge-style service — ideal if you’re already a client.

  • Specialist brokers manage the full process for you, from documentation to lender negotiation, and often move faster thanks to deep lender relationships and direct underwriter access.

5. Asset Requirements

  • Private banks often require asset transfers to secure their best deals. This may not align with your current investment strategy.

  • A broker doesn’t require you to move your money — you remain free to choose the best financial setup without restrictions.

Why Many High-Value Borrowers Choose a Broker First

While private banks can be an excellent solution, especially for very high-value or international clients, starting with a specialist broker offers key advantages:

  • You maintain full visibility of all your options, including private banks, without committing early

  • You can compare the true cost of different routes — including interest, fees, and tied services

  • You benefit from expert packaging of your application, especially useful if you have complex income or are under time pressure

At Connect Mortgage Services, we regularly work with private banks on behalf of clients — but we also bring in high-value offers from boutique lenders, building societies, and specialist providers that may not be on your radar.

Conclusion: Broker or Bank — What’s Right for You?

If you’re seeking a high-value mortgage, both private banks and specialist brokers can open doors. The best choice comes down to your goals, financial complexity, and whether you want a single-lender relationship or access to a wider market.

Working with a specialist broker like Connect gives you the best of both worlds — access to private bank products, but with the freedom to compare all your options and choose what’s truly right for you.

Considering a large mortgage? Speak to Connect Mortgage Services for expert, unbiased advice and access to market-leading deals.