Initially the new mortgages will only be accessible to customers applying directly to TSB either in branch or over the telephone, but will be offered through brokers later in the year.
The new products are available to both first-time buyers and home movers. Borrowers at 95% loan-to-value (LTV) can fix fee-free for two years at 4.69%, five years at 4.99% or 10 years at 5.69%.
The 10-year Fix and Flex deal ties borrowers in for five years after which they can leave free of early redemption charges.
Ian Ramsden, head of mortgages at TSB, said: “We are the only mortgage lender to currently offer mortgages up to 95% with a 10-year fixed rate. Helping people to get a foot onto the property ladder is a fundamental part of creating thriving local economies, and people thriving all over Britain is what TSB’s local banking for Britain is all about.”