Platform has cut rates on a number of residential mortgage products.
These include two and five-year fixed rate deals across a range of LTVs, with rates now starting from 2.79%.
All products come with free valuation and standard legal fees for remortgages.
James Hillon, head of mortgages at The Co-operative Bank, said: “We are pleased to announce that Platform has today reduced rates on a number of its fixed rate and mainstream mortgages.
“Platform is committed to supporting intermediaries and their customers by offering a range of products that are fit for purpose and best suit their needs.
“We hope that the reductions, which place many of our products within the top quartile, will enable brokers to offer a comprehensive range of competitive products to their clients.”