The City is betting on the previously unthinkable prospect of interest rates rising within months. Investors are gambling that rates will have to increase from the current level of 5% to bring inflation under control. Most had previously expected rates to fall to about 4.5% by the end of the year. Investors now fear that at least two, and possibly even three, quarter-point base rate increases are on the cards. City economists said that at the very best all hopes of an interest rate cut this year are now out the window.