Official figures showed that the UK economy shrank more than first thought between January and March, contracting 2.2% in the joint largest fall since 1979.
The Office for National Statistics (ONS) revised down its previous estimate of a 2% contraction, with all the main economic sectors dropping.
The data comes as the prime minister is set for a major speech on the economy.
Deputy national statistician at the ONS, Jonathan Athow said a more detailed picture of the economy in the first quarter showed GDP shrank a little more than first estimated.
The first-quarter contraction is now the joint biggest drop since the July-to-September period in 1979.
The ONS said production output fell by a revised 1.5% in the three months, driven by declines in manufacturing as factories temporarily shut down, while there was a fall in construction output of 1.7%.
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