Rachel Reeves was accused of ‘living under a rock’ Thursday as economic growth dwindled following her tax raid on businesses.

Output grew only 0.3 per cent between April and June – a sharp slowdown on the previous three-month period when the economy expanded by 0.7 per cent.

The Chancellor boasted that the Office for National Statistics data was ‘a strong start to the year’.

But economists and business leaders warned that the expansion was driven by Government spending, while households tightened their belts and corporate investment nosedived.

And it came after the World Bank found that Britain’s living standards had fallen behind debt-laden Italy’s for the first time since 2001.