He speaks on African affairs (and is a notable expert on Southern Africa), deregulation, financial services and information technology.

Between 1985 and 2002, he worked as an oil analyst at County NatWest Securities and then Smith New Court Plc and thereafter served as a consultant to Merrill Lynch until 2008.

He built up the Internet Datacentre business of Globix Corporation in the UK and then became President of Global Sales and Marketing for the International Group.

He plays a proactive role in the charitable sector, as a trustee of 7 charities mostly focused on poverty reduction, education and wildlife conservation in Southern Africa.

Anthony St John married Dr Helen Jane Westlake, they have 4 children[citation needed].