How high could interest rates rise?

Earlier this month the Bank of England (BOE) raised interest rates for a 12th consecutive time as the rate of rising prices remains high. The Bank rate has gone up from 4.25% to 4.5%. The BOE has been under pressure to put rates up because it has a target to keep inflation at 2%, but prices are currently rising at more than five times that level. The rate of interest is at its highest for almost 15 years.