The products are available for both purchase and remortgage customers and include a two-year fix at 2.59% with a £995 fee available up to 65% LTV, and the same deal available up to 75% LTV with a rate of 2.77%.
The lender is also launching a three-year fix at 3.29% with a £995 product fee available up to 75% LTV and a five-year fix at 3.68% with a £995 fee available up to 65% LTV.
It is continuing to offer its fee-free two-year fix at 4.95% available up to 90% LTV.
Lloyd Cochrane, head of lending products at Northern Rock, says: “This latest product range is designed exclusively for the intermediary sector with competitive rates and features.
“We have maintained our very attractive exclusive product at 90% LTV, but we have also added a range of products at lower LTVs, most notably our very keenly priced five-year fixed rate at 65% LTV.”