Case Study: How We Secured an 85% LTV Interest-Only & Part Repayment Mortgage in London

Chris approached us needing an £850,000 mortgage on his £1m London home. Most lenders had turned him away, insisting he needed at least 25% equity for an interest-only mortgage. That wasn’t realistic for Chris, and it didn’t align with his financial plans.

The Client’s Priorities

Chris had a clear set of goals:

• Keep monthly payments manageable while supporting two children through university.
• Pay down part of the loan each month, so he wasn’t just standing still.
• Retain flexibility — he intended to downsize within five years and use the sale proceeds to clear the balance.

The Challenge

Many mainstream lenders were rigid: at high LTVs, they either refused interest-only altogether or demanded a minimum 25% deposit. Chris needed a lender who would take a more flexible approach — someone who could blend interest-only with repayment in a way that matched his affordability and long-term strategy.

For borrowers in similar positions, we explore tailored solutions such as interest-only mortgages and part & part structures that offer both short-term relief and long-term equity growth.

The Solution

By carefully reviewing lender criteria, we identified one who would allow 85% LTV on a part & part mortgage. This gave Chris exactly what he needed:

• A large portion of his mortgage on interest-only, reducing his monthly outgoings.
• The remainder on capital repayment, so he continued to build equity.
• A repayment plan in place through his downsizing strategy, keeping the lender satisfied and Chris secure.

For some borrowers — especially younger professionals — we also explore options such as the first-time buyer interest-only mortgage, which can open doors earlier in their property journey.

The Outcome

For Chris, this struck the perfect balance: lower payments now, gradual equity growth, and long-term security. He could support his children through university while staying on track with his housing plans.

Strive: Interest-Only Mortgage Specialists in London

At Strive, we specialise in interest-only and part & part mortgages. We know which lenders to approach, how to present complex repayment strategies, and how to secure approval even when high street banks say no.

If you’re considering a similar path, speak with a trusted mortgage advisor in London. We’ll help you structure the right solution for your circumstances and long-term goals.

👉 Get in touch with Strive today — the experts in interest-only and part & part lending.