Northern Bank is part of the Danske Bank Group and it offers first-time buyer mortgages up to 95% loan to value.
Martyn Smith, head of mortgage products at Legal & General Mortgage Club, said: “I am delighted to welcome Northern Bank to the Mortgage Club.
“They are experienced lenders in the Northern Ireland market and our members now have greater choice and access to a wide range of competitively priced products for properties in that part of the UK.
“Legal & General's network has an excellent reputation in the market for delivering quality mortgage business to lenders and this was one of the key reasons that Northern Bank chose to do business with us.”
Mark Beattie, head of products at Northern Bank, said: “Our new relationship with Legal & General Mortgage Club gives us an ideal opportunity to work closely with their appointed representatives in Northern Ireland to offer more choice for their customers.
“We have ambitious objectives to increase our market share and look forward to working together with the Mortgage Club.”
