[2] Marland was one of the founding directors of Jardine Lloyd Thompson, a multinational insurance business, where he led the acquisitions of companies including Hunter Boot Ltd (2006),[3] and backed the online news magazine The World Weekly (2013).

[2] He continues his involvement in the business world, and is the chairman at both Bspoke Insurance Group Ltd and EcoWorld Management and Advisory Services (UK) Ltd.

[5] He was one of the owners of SCL Group and Cambridge Analytica, having been convinced by Nigel Oakes to invest in a company that should focus on "security and military advice".

[11] Marland was the Conservative candidate for the target seat of Somerton and Frome at the 2001 general election, coming second to the incumbent Liberal Democrat MP, David Heath.

He was the president of The Commonwealth Youth Orchestra and Choir, and served as chairman and trustee for the Guggenheim UK Charitable Trust for 20 years.

In January 2009 he challenged Giles Clarke for the chairmanship of the ECB but was unsuccessful, despite having pledged to raise a £100m capital fund for development across all 18 counties if elected as chairman.

[17] In recognition of his longstanding contributions to the advancement of commercial and bilateral relations with Malta, he was honoured with the Maltese Order of Merit in 2015.