The award was presented at the NACFB annual dinner held at the Birmingham Metropole Hotel.
Rob Lankey, managing director, commercial mortgages at Aldermore, said: “This is a great achievement for Aldermore because it’s the second year in a row that we’ve won this award.
“Winning an award for the first time is always a great thrill but it’s even more satisfying to win for the second year running because it’s a clear demonstration of the business’s ability to deliver a high quality service on a consistent basis.
“I would like to pay tribute to all the staff at Aldermore who have worked so hard throughout the year to make this possible.”