The new products include a 2-year fixed rate at 4.69% up to 85% LTV with no arrangement fee and a 5-year fixed rate at 4.95% up to 85% LTV with no arrangement fee.
All products come with free valuation and standard legal fees for remortgages.
James Hillon, head of mortgages at The Co-operative Bank - Platform's parent firm, 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.”