Platform is also reducing all fixed-rate mortgages for house purchases by up to 0.20%.
Platform has reintroduced its Help to Buy mortgage range and made mortgages of up to 85% loan-to-value (LTV) available in England.
As the ability to carry out physical valuations is restricted in other parts of the UK, those looking for a mortgage for a property in Scotland or Wales are able to apply for mortgages up to 75% LTV for purchases and up to 80% LTV for remortgages.
Fred Sharp, head of intermediary business at Platform, said: “We are continuing to support our broker partners find the right products and best value deals for their clients as they start to get their aspirations of owning a home back on track.
"Help to Buy is an important part of our product range and we’re glad to have this available from Monday as well as increasing our available mortgages up to 85% LTV for those looking to purchase a house in England.”
As well as reintroducing mortgage products back into the range, Platform is also reducing all fixed-rate mortgages for house purchases by up to 0.20%.
Carolyne Gregory, head of retail lending at Platform, said: “At Platform we are committed to helping as many people as we can purchase their first home while also supporting homeowners take their next step on the property ladder or to save money on their monthly mortgage payment.
"The changes announced today show we are almost back to offering our full range of products and with an across the board reduction to our fixed-rate mortgages for house purchases, we are very much open for business.
“We are continuing to monitor the wider market to ensure our remortgage and product switch options remain competitive as we understand that finding the right deal can make a big difference to households navigating a challenging economic landscape.
"We will support our mortgage customers to find the right mortgage option for their circumstances and their financial situation.”
