[13] In 1997, he founded Onyvax Ltd.,[1] a privately-funded biotechnology company developing cancer vaccines, where he held the position as Research Director;[14] it was dissolved in 2013.

[citation needed] Dalgleish is on the scientific advisory board of Immodulon, and has stock options in Immunor AS, a disclosure he made in order to have his research work published.

[17] While still not generally accepted, this remains a live debate, and it has been claimed that the support of Jay Bhattacharya and John Ratcliffe for the lab leak theory will bring "explosive documents" to light in 2025.

[18] Dalgleish was a member of the UK Independence Party and stood as a candidate in Sutton & Cheam,[19][20] during the 2015 United Kingdom general election finishing fourth with 10.7% of the vote.

He also identified the close correlation between the immune response and the presence of tropical spastic paraparesis in patients infected with the HTLV-1 virus.

He believed the lockdowns and mask mandates in many countries had been "total madness" and that the "vaccines" were wrongly named and had been "largely ineffective at saving lives" while causing many adverse reactions.