Former Tory minister Liam Fox received a £20,000 donation earlier this year from a Covid-19 testing company that he reportedly contacted the former health secretary over.
According to an email seen by the BBC and the legal campaign group the Good Law Project, Dr Fox recommended SureScreen Diagnostics to then-health secretary Matt Hancock in 2020.
SureScreen Diagnostics would later be awarded a £500 million testing contract by the Department of Health and Social Care.