Board Members

The experienced leadership team that is driving Rosslyn forward

James Appleby


James has over 25 years' experience in the IT industry where he has grown teams and capabilities globally. In 2002, James founded Bluefin Solutions; as CEO he grew the business globally to approximately 250 people. Following the sale of Bluefin in 2015, he remained with the parent company taking on a larger role.

James now acts as Chairman and non-executive to a small number of fast growth technology companies.

James has a Master of Arts in Engineering from Cambridge University.

James was appointed to the Board on 20 July 2018. 


John O'Hara

Non Executive Director

John has more than 30 years of experience in the high tech industry as a proven global P&L leader, having held senior positions with some of the world’s biggest companies including Lotus, IBM, Microsoft and, more recently, Pitney Bowes.

As President of Pitney Bowes Software and a corporate officer of Pitney Bowes, John has led global expansion initiatives and was responsible for a number of strategic acquisitions across the UK, Europe and Australia. He has previously worked for Microsoft UK as General Manager, Enterprise and Partner Group where he was responsible for more than $1 billion in revenue, as well as senior roles at IBM, Pivotal Corporation and Lotus Development Group.

John has a Bachelor of Science (Hons) degree in Chemistry from the University of Wales Institute of Science and Technology, Wales and a Master of Science degree from the University of  Manchester, UK.


Bernard Quinn

Non Executive Director

Barney has over 30 years’ experience with application software IT companies and has successfully introduced two UK companies to North America. For 13 years, Barney was a main board director of Sherwood International plc, a provider of software and services to the insurance industry – a key achievement was establishing and running the Sherwood North American operation for three years.

Barney is currently a non-executive director of Workplace Systems, having previously been CEO, completing an MBO in 2011 with the help of LDC, taking the company private after many years on AIM. He is non-executive chairman of Clearstar Inc., an AIM listed company based in Atlanta.

He has also worked with private equity companies and has investments in Voyage Design, a creative company, and Parago Ltd, an asset management software company.


Charles Clark

Founder, President

Charlie is a highly experienced and well regarded senior executive. He co-founded Rosslyn Analytics Ltd. and Ockham Capital Ltd. and, prior to this was an investment banker.

Charlie has extensive experience of working with fast growing companies and the capital markets.

Consistently recognized as a pioneer and leader in cloud analytics and for his leadership in establishing Rosslyn Analytics, Charlie is also a prolific writer and speaker on the subjects of data management and cloud analytics.

Charlie served with the British Army during Desert Storm and holds an MBA from City University Business School, London, UK. He is a Fellow of the Securities Institute and is an Accredited Associate of the Institute for Independent Business.


Hugh Cox

Founder, President

Hugh co-founded Rosslyn Analytics Ltd with Charlie Clark. Hugh is a recognized expert in helping public and private sector organizations tackle business issues through technologies including cloud computing, data management and analytics.

Hugh has authored and spoken extensively on the subject of data analysis with particular focus on fraud prevention and detection, through the deployment of cloud-based analytics platforms.

Prior to establishing Rosslyn Analytics, Hugh held senior positions with COO Investments (EMEA) and Citigroup Private Bank. He also worked for Perot Systems, JP Morgan and Logica.

After leaving the British Army, Hugh took a BSc in Computer Science and an MBA from City University Business School, London, UK.


Roger Bullen

Chief Executive Officer

Roger has more than 20 years of finance, executive and operational leadership experience in technology-based companies, including start-ups, large cap and consulting firms. Roger’s experience covers working with national, US and global based companies. 

Roger recently held senior roles with Navigant Consulting Inc. as head of the International Division and Sapient Inc. as VP International Finance. He has also worked with private equity companies and been successful in taking companies to market and trade sale. 

Roger has been a shareholder of Rosslyn Analytics Ltd. and subsequently in Rosslyn Data Technologies plc since Charles and Hugh established Rosslyn.

Roger has been a member of the Chartered Institute of Management Accountants since 1990.