The change has taken effect immediately on new applications and applies to borrowers who already own at least one existing buy-to-let property.

Charles Haresnape, managing director of residential mortgages at Aldermore, said: “The rental market continues to go from strength-to-strength and demand for buy-to-let mortgages is increasing.

“We’ve received a number of enquiries from brokers asking if we will accept applications from the same applicant for more than two properties and we’re therefore delighted to announce this enhancement to our lending criteria.”