The mortgage price war between the UK’s high street lenders, including HSBC, NatWest and Santander, has cooled as the last sub-four per cent fixed product has disappeared from the market. Banks and building societies have slashed mortgage rates in recent months ahead of the Bank of England’s expected cut to the base rate later this year. However, this trend has been reversed with HSBC announcing it will be raising the interest rates of certain fixed rate mortgage products as of today. This comes shortly after Santander, Coventry Building Society and TSB also increased prices on selected mortga…