Intense market pressure
The Treasury and central bank statements came towards the end of a day of turmoil for Britain's currency and debt.
While the pound plunged by as much as 5% against the dollar to touch $1.0327, its weakest on record, in Asian trade, it had pared most of the day's losses in European trading on hopes of an emergency rate hike.
The statement at the close of trading on Monday pushed the pound back to as low as $1.0645 from $1.0820. Sterling was trading at $1.0680 at 1644 GMT, down 1.6% on the day.
In the market for British government bonds, or gilts, the pressure had been even more intense, with five-year bond prices recording their joint-biggest daily fall since at least 1991, matching Friday's historic slump.