The UK economy saw no growth in February after being hit by the effects of strikes by public sector workers, official figures show.
The Office for National Statistics (ONS) said that a rise in construction activity had been offset by walkouts by teachers and civil servants.
It follows a surprise 0.4% jump in economic growth in January.
Despite February’s flat performance, the chancellor said the UK’s economic outlook was “brighter than expected”.
Jeremy Hunt noted that GDP – the measure of economic growth – had grown by 0.1% in the three months to February and the UK was “set to avoid recession”.
But Labour said the UK was “lagging behind on the global stage with growth on the floor”.
“The reality of growth inching along is families worse off, high streets in decline and a weaker economy that leaves us vulnerable to shocks,” said shadow chancellor Rachel Reeves.
Darren Morgan, ONS director of economic statistics, said the UK construction sector had grown strongly in February after a poor January, with increased repair work taking place.
There was also a boost from retailing, with many shops having “a buoyant month”.
But he added: “These were offset by the effects of Civil Service and teachers’ strike action, which impacted the public sector, and unseasonably mild weather led to falls in the use of electricity and gas.”
Walkouts by teachers nationwide on 1 February and in some regions of England on 28 February had been the biggest drag on UK growth, the ONS said.
Strikes by many civil servants on 1 February also held back growth.
High energy prices, rising interest rates and weak trade flows have been dragging on the UK economy for some time.
However, many economists expect inflation – the rate at which prices rise – to ease later this year as energy and food prices fall.
The UK’s inflation rate was 10.4% in the year to February, the highest for nearly 40 years.