The Bank of England’s aim is for the country to have low and stable inflation – and it works to a target of two percent. Changing interest rates are the Bank of England’s mechanism for achieving its inflation target, and in the current climate of high inflation, it believes raising rates is the right approach.
Otherwise, they believe that the problem will continue to get worse and interest rates would need to be raised by a much higher amount. Of course, some may ask why they do not aim for zero inflation, but the logic is that people may delay buying things if they suspect prices will go down, and if that happens en masse, the economy could experience deflation.