Tax haven based companies won five percent of the value of public tenders throughout EU countries in 2006-2017, according to specialist economic data processing firm Datlab.

However, when looking solely at the UK, the figure rises to 13.4 percent.

After examining the ownership structure of 255,624 suppliers, the firm found roughly EUR 100 billion is awarded annually to firms with co-owners from countries that have been black or grey-listed by the EU in its list of non-cooperative tax jurisdictions.

The most common ‘tax haven’ links were to Switzerland, Bermuda, British Virgin Islands, Cayman Islands and Cu...