"This expansion faces some challenges," Carney said, noting that geopolitical risks have intensified and that financial conditions were likely to become tighter as the global recovery progresses.
"Sustained expansion here at home will ultimately require growth in productivity and real incomes, both of which have disappointed," he said.
Figures from the Office of National Statistics showed that pay including bonuses in the April to June period was 0.2 percent lower than a year earlier, due to an unusually high growth rate a year ago. Whatever the reason, that was the first time wages have fallen since May, 2009 when Britain was, like much of the world, mired in a deep recession following the global financial crisis.
If bonuses were excluded, the growth rate measured at 0.6 percent higher than a year earlier.
Carney acknowledged that the weakness in wages means that the measure of "slack" in the economy had been greater than previously thought. As a result, he said that the economy, Europe's third-largest, may be able to sustain a higher level of employment without generating additional inflationary pressures.
"Increases in Bank Rate, when they come, are likely to be gradual and limited," he said. "While that is an expectation not a promise, its clarity is helping businesses to plan, invest and hire, supporting the economic momentum we see today and will need tomorrow."
With wages lagging inflation, Chris Williamson, an economist at Markit, says policymakers will be reluctant to raise interest rates for fear of stalling the recovery. Williamson said the bank wants to ensure pay is rising so that households can afford higher borrowing costs.
"Such weak pay growth adds to the sense that any first rate rise will be delayed until early next year," he said.
That's certainly the immediate view in the markets, where the pound has fallen 0.6 percent to $1.6703.
The central bank has kept its main interest rate at a record low of 0.5 percent since 2009 to help nurse the economy back to health. A run of upbeat economic data, including the U.K.'s high growth rate, has raised market expectations that borrowing rates will start to rise sometime over the coming year. Figures last month showed GDP had finally surpassed its pre-recession peak.