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UK Mortgage Rates Rise as Iran Conflict Puts Pressure on Borrowing Costs

Published Date: March 15, 2026

( Last Updated: March 13, 2026 )

UK mortgage rates are climbing, and many borrowers are feeling the impact. The reason? The ongoing Iran conflict that is sending shockwaves throughout global financial markets and pushing lenders to adjust their mortgage pricing. What many had hoped would be a period of easing borrowing costs now looks uncertain, as rising inflation expectations and the possibility of delayed Bank of England rate cuts add extra pressure.

For anyone planning to move home, remortgage or take out their first mortgage, the market has become much less predictable. It’s now more important than ever to plan ahead and understand how global events influence UK mortgage rates.

Latest UK Mortgage Rate Averages

The latest figures show that UK mortgage rates are steadily climbing, with average rates now above 5%. After months of hope that borrowing costs might fall, this shift has come as a surprise to many and is reversing earlier optimism in the market.

Mortgage Type

Current Average Rate (Approx.)

2-Year Fixed

~5.01%

5-Year Fixed

~5.09%

It’s not just the numbers that are changing; the market itself is becoming more unpredictable. Many lenders have withdrawn some of their most competitive products and repriced those that remain available. For borrowers, this creates a more competitive and volatile environment, where locking in a good deal has become more urgent than ever.

Whether you’re a first-time buyer, moving home or remortgaging, these rising rates highlight the need to act quickly. Waiting too long could mean missing out on the best options before rates climb even further.

How the Iran Conflict is Affecting UK Mortgages

The ongoing Iran conflict is having a very real impact on UK borrowers, and it’s showing up clearly in mortgage markets. Many major lenders have already repriced or adjusted their mortgage products.

Lender

Product Type

Rate Hikes

Nationwide

2, 3, 5 and 10-Year Fixed Rate

0.25% on Some Products

HSBC

Rates for New Customers

0.10% to 0.25%

HSBC

Rates for Existing Customers

0.04% to 0.13%

Coventry Building Society

Selected Fixed Rates

Increasing from Monday

These changes affect a wide range of borrowers, from first-time buyers to those moving home or remortgaging, and reflect how closely mortgage rates are tied to swap rates, the key financial measure lenders use to predict the cost of borrowing over the term of a loan.

Why the Iran War Matters for Mortgages

The war has pushed up global energy prices, which in turn has heightened expectations of inflation in the UK. Higher inflation feeds directly into swap rates, and when these rise, lenders often increase fixed mortgage rates to reflect the higher risk and cost of lending.

This is why borrowers are seeing rates move upwards across the board, even though the Bank of England’s base rate hasn’t changed.

Bank of England Outlook

Before the Iran conflict, markets had been expecting the Bank of England to gradually cut interest rates. Now, that expectation has shifted. Analysts are delaying predictions of rate reductions due to renewed inflation pressures, meaning mortgage rates may remain elevated for longer than many borrowers hoped.

For those planning to take out a mortgage or remortgage soon, this combination of geopolitical uncertainty, rising swap rates and delayed Bank of England cuts means the market is more volatile than ever.

What the Industry is Saying

Swap Rates & Volatility

Lenders note that as swap rates have moved, they have had to adjust mortgage pricing across products.

Lock In Sooner Rather Than Later

Mortgage advisers suggest that borrowers who are considering a new fixed‑rate deal should act quickly.

Choppy Markets Ahead

The landscape is more volatile than it was even just a week ago, and mortgage pricing is likely to stay unsettled until geopolitical risks fade.

What This Means for Borrowers

Existing Fixed-Rate Holders

  • Those on current fixed deals may still have time before their term ends, but the repricing may affect future borrowing plans

First-Time Buyers

  • Fixed rates above 5% mean higher monthly costs compared with a few weeks ago
  • Market volatility means the best deals can disappear quickly

Remortgagers

  • With lenders pulling products and repricing, choices may be fewer
  • Many lenders allow rate security up to six months in advance, offering some protection if you’re approaching the end of a fixed term

Conclusion

The UK mortgage market is very sensitive to global forces, and the ongoing Iran conflict has contributed to rising borrowing costs by elevating inflation expectations and influencing swap rates.

For borrowers, this means higher average fixed mortgage rates and a more unpredictable market, emphasising the value of planning ahead and considering locking in a rate before further shifts occur.

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