Spotlight on Corruption has written to the Crown Procurement Service asking it to examine if business should be awarded to the firm, which has been embarrassed by its involvement in a string of corporate collapses and court judgments.

The accounting group is currently being investigated by the UK’s Financial Reporting Council for its audits of the private hospital operator NMC Health and the investment firm London Capital Finance, which both collapsed amid claims of fraud.

It has also played a notable role in a series of scandals regarding overseas contracts.

The company said it strongly disputed “the characterisation of EY” by the campaign group.

It has also played a notable role in a series of scandals regarding overseas contracts.

The company said it strongly disputed “the characterisation of EY” by the campaign group.

Spotlight on Corruption’s letter stated: “EY’s serious and recurring professional misconduct amounts to sufficient grounds to review whether a discretionary exclusion under the Public Contracts Regulations 2015 should apply.

“It should also trigger proper consideration of whether the firm is, as a result, a ‘high-risk’ supplier as defined in the government’s Strategic Supplier Risk Management Policy, and whether it can be considered a reliable contractor.”

Other examples of EY’s alleged misconduct cited by the campaign group included: