Skip to main content
News
Buy to Let

2025 Buy-to-Let Mortgages: Key Trends and Insights

The UK buy-to-let mortgage market has seen significant growth in 2025, impacting landlords and brokers alike.

By David Sampson
1 August 2026
3 min read
UK buy to let mortgage article image for 2025 Buy-to-Let Mortgages Key Trends and Insights

TL;DR

  • Buy-to-let lending saw substantial growth in 2025.
  • this reflects changing strategies among lenders and offers opportunities for landlords and brokers.

Written by David Sampson for Mortgage118. Last updated 1 August 2026. Reviewed against our editorial standards. Editorial standards. Mortgage118 is a directory — not FCA-authorised and not a mortgage adviser.

The UK mortgage market has shown significant recovery in 2025, particularly in the buy-to-let sector, with total gross lending reaching a notable amount. This increase highlights the evolving dynamics of mortgage lending, impacting landlords, brokers, and potential investors.

What are the latest trends in buy-to-let mortgages?

The buy-to-let sector experienced remarkable growth in 2025, with gross lending increasing significantly. Santander emerged as a standout performer, with its buy-to-let lending nearly tripling, propelling it to a higher position among lenders. Other notable lenders like NatWest and HSBC also reported significant increases in buy-to-let lending. Kensington Mortgage Company saw its buy-to-let balances rise, moving up in the rankings.

How did the major lenders perform in 2025?

Among the major lenders, Santander recorded the highest growth in gross lending overall, followed by Barclays and other key players. Lloyds, while still holding the largest share of both gross lending and outstanding balances, had the slowest growth among the big six. Notably, Barclays overtook Santander in terms of outstanding balances, with both lenders now tied at a significant amount.

What does this mean for landlords and brokers?

The significant growth in buy-to-let lending presents various opportunities for landlords and brokers. With lenders like Santander and NatWest aggressively expanding their offerings, landlords may find more competitive rates and flexible terms. The increase in lending activity indicates a robust market, suggesting that lenders are keen to attract new business. Brokers should pay attention to the shifts in lender rankings and growth patterns, particularly among smaller lenders gaining momentum in the specialist and buy-to-let sectors. This trend could lead to more diverse options for clients seeking buy-to-let mortgages.

What challenges might arise for the mortgage market?

Despite the overall growth, the slower increase in total mortgage balances highlights potential challenges. This discrepancy suggests a high level of activity driven by remortgaging and product switching, rather than a significant influx of new borrowers. Brokers and lenders may need to adapt to a market where churn is prevalent, focusing on customer retention strategies and innovative products to meet changing borrower needs.

Frequently asked questions

How can landlords benefit from the current buy-to-let market trends?

Landlords can benefit from increased competition among lenders, leading to better rates and terms for buy-to-let mortgages. With significant growth in lending, there are more options available, particularly from both major and smaller lenders.

What should brokers watch for in the evolving mortgage market?

Brokers should monitor shifts in lender rankings and growth rates, especially among smaller lenders gaining traction in the buy-to-let market. Understanding these dynamics will help brokers offer the best options to their clients.

About David Sampson

David Sampson writes about the UK mortgage market for Mortgage118, covering specialist lending, market trends, and practical advice for borrowers. All content is reviewed for accuracy against FCA guidelines and current market data.