[5] Hall previously served as its Executive chairman and Chief Investment Officer,[6] and owns 47% of the firm.

[2] In 2008, with fellow financier George Robinson, he acquired 26% of Prospect, a British magazine of political affairs, from Derek Coombs.

[3] Moreover, Hall was a founding shareholder of Monocle, a global affairs and lifestyle magazine, but has since sold his stake.

[3] In 2005 Hall, along with James Gurnsey and Cameron McClure, founded Flat White café in Berwick Street, Soho, which was the first of the third wave independent cafes to introduce Antipodean-style coffee, and especially the eponymous Flat White, to London and Europe.

[2] He was a founder of the Sydney Rainforest Action Group and the London Committee for the Abolition of Whaling.

[5] He has been named a "Business Visionary" by Compassion in World Farming,[7] a campaigning and lobbying animal welfare organisation based in England.

[4] He is a patron of CleanupUK, a non-profit organisation which encourages volunteers to pick up litter in England whose president is Camilla, Duchess of Cornwall.