UK interest rates are expected to rise further this week as inflation remains stubbornly high, economists have said.<br /><br />Experts and the financial markets widely expect the base rate to rise from 4.25 per cent to 4.5 per cent on Thursday 11 May, representing a 0.25 percentage point increase.<br /><br />It would be the 12th time in a row that policymakers at the Bank of England have raised rates, making it even more expensive to borrow and pushing banks to lift savings rates.