Epsilon specialises in advising clients operating at the intersection of technology, government, enterprise and society.

Through our global network, we help our clients to grow their businesses and expand internationally through innovative commercial, intellectual and social partnerships.

Our senior team has experience at the highest levels of government and business around the world.

In addition to our strategic advisory work, Epsilon's Founding Partners are co-founders of Cyber London, Europe's first cyber security accelerator and incubator space. CyLon welcomes start-ups building global-scale businesses with innovative technology, and helps them to improve their skills, products, sales and investment-readiness. CyLon demonstrates our commitment to supporting the growth of cutting-edge technology companies.

Grace Cassy
Founding Partner

Grace has significant experience in international business and policy, advising corporations and HNWI clients active in global finance and industry on their external partnerships since 2008. Prior to this, she spent 10 years in the UK Diplomatic Service, working on Asia, Europe, the Americas and global security policy. Between 2004-06, she was a foreign policy Private Secretary to Prime Minister Tony Blair in 10 Downing Street specialising in Asian issues.
Jonathan Luff
Founding Partner

Jonathan is an experienced former diplomat and advisor to the British Prime Minister. Before serving as advisor on innovation and international issues at 10 Downing Street, Jonathan held diplomatic posts overseas in Riyadh, Baghdad, and Paris. At No.10, Jonathan worked on issues including Open Government and Cyber Security. He was also Director of the ‘GREAT’ Campaign, a global communications programme promoting inward investment and enterprise in the United Kingdom.
Poppy Wood

Poppy is an experienced advisor to senior executives in both the private and public sectors. Until 2014, Poppy was Deputy Head of the Prime Minister's Appointments Unit at 10 Downing Street, advising the Prime Minister on strategic national and international personnel issues. At No10, she also worked on innovation policy, and was the lead advisor for the G8 Innovate Conference in 2013. Prior to this, she worked at a leading American investment bank, advising on regulatory issues.

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