Business patience with the government over Brexit has reached breaking point, the British Chambers of Commerce has said.

The organisation, which represents thousands of companies across the UK, has until now largely stayed out of the Brexit debate. In a sign of growing anger at the continued uncertainty over Britain’s future trading relationship, however, the organisation publishes a series of questions today that they say need to be answered urgently.

They call for cabinet ministers to “stop squabbling” and put the nation’s economic interests first. Of the group’s 23 main concerns, they say that the government has managed to make limited progress on only two.

Adam Marshall, the chambers’ director-general, said that their members had been patient for two years but time had now run…