ING Direct claims its approval rate and turn-around times have dramatically improved since it made changes to its policy and assessment team.
Last month, the second tier increased its credit assessment team and added 18 policies with a focus on pushing deals through quickly.
ING's head of broker distribution Mark Woolnough said 43% of cases, which previously required additional information, were now approvded on the spot.
"It's clearly addressing a key detractor that brokers previously identified and we're really happy with the results," he said.
"Brokers are receiving clearer, more accurate and consistent credit decisions."