The building society received a rating of 84.4%, based on adviser input to SMP.
The society believes that ensuring strong customer outcomes for introducers and their customers was crucial to the high rating given in the feedback.
Sam Ward, commercial director at Dudley Building Society, said: “We are delighted to receive this endorsement from our introducers.
“Given the difficulties the industry faced in 2020, our concentration on customer communication and service has been more than justified in the results from the survey.
“Our broker support both internally and externally through our BDMs has been highlighted by those taking part in the survey, as well as the recognition of being particularly strong in niche mortgage sectors.
“As we continue to face the challenges of the pandemic both privately and in business, Dudley is keen to provide only the best of propositions to our introducer and their customers.”