The Bank of England on Thursday raised its growth forecast for the British economy through the next three years, and said it might need to raise its benchmark interest rate more than once over that period to control inflation.

Uncertainty around Brexit and slowing global growth are still weighing on economic activity in Britain, but the bank raised its growth forecast for this year to 1.6 percent, up from 1.3 percent in February. It cited expectations that Brexit fears would subside, global growth would stabilize and consumer demand would grow.

The bank kept its benchmark interest rate at 0.75 percent. But if the economy reaches a 2.2 percent growth rate by the end of 2022, as projected, inflation could pick up speed and the bank may need to raise rates faster than previously anticipated, said Mark Carney, the governor of the Bank of England.

Consumer price inflation in March was still slightly below the target of 2 percent for the bank’s monetary policy committee. Mr. Carney cautioned that future rate increases would be “at a gradual pace.”