Legal & General Mortgage Club saw 15 per cent sales growth last year, to £46bn of sales, meaning it was involved with one in every five mortgage transactions in the UK.
Stephen Smith, L&G’s director of housing partnerships, said the intermediary mortgage lending market delivered “exceptional growth” in 2015.
He said: “Intermediaries and brokers have a unique understanding of the market and can offer a broader and better range of products than are available on the high street, which is great news for customers.”
The mortgage club has partnerships with more than 6,000 mortgage brokers.
Last year saw L&G chief executive Nigel Wilson responded to repeated calls from Jeremy Duncombe - the mortgage club’s director - to alleviate supply and demand problems in the market by building new homes.
“At Legal & General we are investing to create new assets in many areas including housing and urban regeneration,” Mr Wilson stated.
“Unless we invest in the new, we risk moving into a world of zero’s, including zero wage growth, productivity and inflation. This is not the outcome we want for the UK.”
Earlier this month, L&G announced that lifetime mortgage lending reached £201m in 2015.
Last year it bought New Life Home Finance Limited and has since rebranded it as Legal & General Home Finance.
