A rise in UK unemployment by 21,000 in the three months to February has been linked to uncertainty over the EU referendum.

John Hawksworth, chief economist at PwC, said time will tell whether the referendum will have a long term impact on figures.

"These latest data are consistent with other evidence that UK growth slowed somewhat during the first quarter of 2016, reflecting a more fragile global economy and uncertainty related to the EU Referendum outcome in June," he said.

There were 1.7 million unemployed people in the UK by February 2016, defined as people seeking and available to work but not in work.

The numbers of unemployed were 142,000 fewer than a year earlier, but have risen again since November.

Stephen Crabb, the new Work and Pensions Secretary, told the BBC that he thought there was a link between higher unemployment and uncertainty over the UK's position in the EU.

>“Mark Carney, the governor of the Bank of England, has also said that the questionmarks hanging over Britain's membership of the single market is having a real-time impact on the UK economy and investment decisions," Mr Crabb said.

"I'm not saying the 21,000 increase in unemployment is a direct result of that, but it's an example of the questions that the people who say Britain should leave the single market need to respond to," he added.

Nick Palmer, senior labour market statistician, said the data showed that recent improvements in the labour market in the UK might be fading.

“It’s too soon to be certain but, with unemployment up for the first time since mid-2015, and employment seeing its slowest rise since that period, it’s possible that recent improvements in the labour market may be easing off," he said.

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The number of people in employment also increased to 31.41 million, 20,000 more than for the three months to November 2015 and 360,000 more than a year earlier.

The number of people not working and not seeking or available to work fell.