Ms Adams has been arguing that she is self-employed amidst an HMRC clampdown over so-called IR35 rules. Last year, the TV presenter won a third court victory over a disputed £124,000 tax bill.

The tax authority revealed it had decided not to appeal against the First Tier Tribunal’s decision in the case of Ms Adam’s company Atholl House Products, The Times reports.

An HMRC spokeswoman said: “Given this litigation has been ongoing for a number of years and the FTT does not set binding legal precedents, we don’t think it would be proportionate to appeal in this case. We always seek to resolve disputes out of court first and only take action to litigate where this isn’t possible.”

The case concerned the question of whether Ms Adams was a deemed employee of the BBC during the relevant tax years. The tax office had argued that she should be classified as an employee and therefore liable to pay more taxes. But, the tribunal consistently found that Adams was genuinely self-employed.