Knowledgeable And Talented Staff Are The Foundation Of The Business And Its Success.

Meet our team


Neil Puri

Chief Executive Officer

Neil Puri co-founded SRL Global in 2007. With the backing of some of the world’s largest family offices, Neil led the management buyout from Man Group Plc in mid-2009. Beginning his career as an Equities Market-Maker at Merrill Lynch, he was subsequently one of the founding members of the European propriety trading business and responsible for all Statistical and Quantitative trading in Europe. Neil studied at the University of Oxford and holds a First Class Honours degree in Mathematics, an MSc. in Applied Statistics and an MBA in Finance.

Robert Deffley

Chief Financial Officer

Robert Deffley joined SRL in June 2009. Previously, he was Financial Controller at Man Global Strategies, a $19 billion fund of funds business unit at Man Investments where he was responsible for day to day operations. Whilst at Man, he successfully set up two hedge fund management joint ventures for the Group and had oversight responsibilities for further three joint ventures. Before joining Man Investments in 2007, he worked for seven years in the Investment and Insurance Management division at PriceWaterhouseCoopers where he managed a portfolio of international asset management clients for the Company.

Simon Wilson

Head of Client Solutions

Simon Wilson runs the Client Solutions Group at SRL Global. He started his career at Citigroup in 1986 in Equity Derivative Sales covering UK institutional clients. Simon moved to Merrill Lynch in 1990 where he spent 17 years and during his time there he was involved with all aspects of equity derivatives including listed futures and options, program trading and OTCs. Whilst at Merrill Lynch Simon ran Global Equity Derivative Sales in Europe.

Prof. Paul Willman

CEO Private Investment Office
Paul has worked with SRL Global since 2013 and is the CEO of SRL’s consulting business SRL P.I.O. He is also currently Professor of Management at the London School of Economics which he joined in 2006 and is a Fellow at the Said Business School, Oxford University. He is a Council member of the Advisory Conciliation and Arbitration Service. Until 2006, he was Professorial Fellow of Balliol College, and Professor of Management Studies in the Said Business School, Oxford University. He was Director of Executive Education at Oxford 2001-03 and founding Director of the Oxford EMBA. He was Professor of Organizational Behaviour and Industrial Relations at London Business School from 1991-2000. He is the author of ten books and numerous articles in academic journals.

Dr. Dafydd Daniel

Product Architect
Dr. Dafydd Daniel joined SRL Global as Chief Scientific Officer in 2010 having worked at Man Group Plc., London as an investment committee member (peak assets under management of $18 billion) and head of their London fund of hedge funds research and portfolio/product management function. An experienced C++ programmer with substantial background in hedge funds and structured products, including capital requirement modelling, Dafydd is used to bridging business and technical communications. He read Physics at Oxford and also attained his doctorate there in magneto-transport in 1997 and after that he worked for a financial software house before joining Man in 2003 as a senior quantitative analyst.

Jonathan Martin

Director of Strategy
Jonathan has been Director of Strategy since 2009 when SRL spun its business out from Man Group PLC. Previous to this, he was one of the founding partners and Chief Risk Officer of BlueCrest Capital. Jonathan studied Philosophy, Politics and Economics (PPE) at Oxford University and has 30 years of capital markets experience.

Mike Leigh

Chief Systems Engineer
Mike Leigh joined SRL in February 2008. He is an experienced Systems Administrator and Networking Engineer with approaching 20 years’ experience across multiple disciplines. Mike has designed,deployed and maintained systems for various companies requiring 24×7 and 99.999% up-time levels. His experience with security and best practice stems from working with extremely high security and sensitive companies and organizations. He has experience of administering Windows and various Linux Servers platform and has configured and installed networks and routers for production environments including SAN, VMWare, RAS, and Firewall devices within Data Centres. He is also a very competent developer, primarily for administration, automation and reporting, and is able to bridge the divide between software developers and hardware providers to ascertain the perfect solution for internal projects.

Tan Quach

Technical Architect
One of the Co-Founders of SRL Global, Tan has approaching 20 years of technical experience working in Finance in both Buy and Sell side organisations. He has experience building automated trading systems, market surveillance, back-office, front-office and analytics. He started his career working with a managed services company outsourced to Dresdner Kleinwort Benson and Algorithmics before moving to Deutsche Bank and Merrill Lynch and a number of multi-billion dollar hedge funds.