MSP Jackie Baillie said that of the £37.3 million the Scottish Government received as part of the UK’s Brexit preparation fund, £10m has gone on departmental budgets.

Money received through Barnett formula consequentials is not ring-fenced, but traditionally is spent on the area for which it was received.

However, in a parliamentary answer to Ms Baillie, SNP finance secretary Derek Mackay said £10m of the Brexit fund had been spent across a variety of government departments – with the largest share, £4m, going to the environment, climate change and land reform budget.

Derek Mackay under fire over mis-spent Brexit cash. Picture: PA

The row comes just weeks after the independent Scottish Fiscal Commission warned that the Scottish Government was facing a £1billion black hole.

Ms Baillie said: “The SNP’s decision to blow £10m of no-deal Brexit funding has left Scottish businesses, and the jobs they support, at risk.

“Derek Mackay is doubling down on the Tories’ economic incompetence with this decision. A no-deal Brexit will never be a credible option, but neither is blowing preparation funding which could shield Scottish businesses from the worst excesses of a new Tory prime minister.

“Derek Mackay and the SNP should come clean over why they have misused this funding and what they intend to do to ensure Scottish jobs are not put at risk from their actions.”

But a spokesperson for Mr Mackay said: “Labour have accused the SNP government of overspending our budget, then they criticised us for underspending it – and now they’re criticising us for not underspending enough. The only consistency in Labour’s position is that they don’t have any idea how public finances work. If Labour really want to prevent the potentially catastrophic consequences of a no-deal Brexit, then instead of manufacturing silly grievances this they would join with us in opposing Brexit.”

Millions of pounds intended to help Scotland prepare for no-deal Brexit ‘mis-spent’