Who we are

ICAS is a professional body for more than 20,000 world class business men and women who work in the UK and in more than 100 countries around the world. Our members have all achieved the internationally recognised and respected CA qualification (Chartered Accountant). We are an educator, examiner, regulator, and thought leader.

Almost two thirds of our working membership work in business; many leading some of the UK's and the world's great companies. The others work in accountancy practices ranging from the Big Four in the City to the small practitioner in rural areas of the country.

We currently have around 3,000 students striving to become the next generation of CAs under the tutelage of our expert staff and members. We regulate our members and their firms. We represent our members on a wide range of issues in accountancy, finance and business and seek to influence policy in Europe and the UK, always acting in the public interest.

ICAS was created by Royal Charter in 1854.

Office Bearers

Ken McHattie CA, President

Ken McHattie

Ken McHattie is Chairman of onshore energy company Aurora Petroleum. He qualified as a CA with Thomson McLintock in Aberdeen in 1978, and as a Scottish solicitor in 1985. He worked for venture capitalists 3i before becoming a partner in the Aberdeen law firm Ledingham Chalmers. He worked for service company Atlantic Power, North Sea Operator Tuscan Energy and energy fund manager EDP before helping to establish Aurora.

Sir Brian Souter CA, Deputy President

Brian Souter

Sir Brian Souter is one of the UK's best known entrepreneurs. He is the chairman and co-founder of Stagecoach Group, one of the world's leading transport companies. It was founded by Sir Brian and his sister Ann Gloag OBE with two buses in 1980 and now employs 39,000 people at bus and rail businesses across Europe and North America. He was the Group's Chief Executive until May 2013.Sir Brian qualified as a Chartered Accountant in 1984 after training with Arthur Andersen in Glasgow.

Sandy Manson CA, Vice President

Sandy Manson CA Sandy Manson is CEO of Johnston Carmichael, Scotland's largest independent firm of Chartered Accountants employing more than 600 people across 11 offices.

Sandy trained with Arthur Andersen in Edinburgh and qualified in 1985. He then worked with Arthur Andersen in London and Zurich in their audit and assurance division.

In 1991 on his return to Aberdeenshire, Sandy joined Johnston Carmichael and became a Partner in 1993 and CEO in 2007.

Executive Team

Anton Colella, Chief Executive

Anton ColellaAnton Colella became Chief Executive of ICAS in October 2006.

Previously he was the Chief Executive of the Scottish Qualifications Authority (SQA), from December 2003 to October 2006, following a period as Director of Qualifications.

He was elected Chair of the Global Accounting Alliance (GAA) in November 2011. The GAA has around one million members in 165 countries, and represents a collection of leading institutes from around the world. Anton became an Honorary Professor of Education at the University of Glasgow in 2012 and has been a member of the University’s Adam Smith Business School Advisory Board since 2011.  He received an honorary Doctorate from BPP University in 2014.

Anton is a Trustee of Columba 1400, an award winning social enterprise and charity to help young people realise their potential, a Trustee of the Scottish International Education Trust (SIET) which offers financial assistance to individuals for further education and training and is Chairman of the Executive Board of the Scottish Catholic Education Service.

A graduate of the University of Stirling, Anton’s career began as a teacher of Religious Education. Before joining the SQA he was Depute Head Teacher at St Margaret Mary’s Secondary School in Glasgow.

Anton lives in Glasgow and his main interests are his family, rugby, eating out and spending time in the Highlands of Scotland.

Mark Allison, Executive Director, Education

Mark AllisonProfessor Mark Allison is a Chartered Accountant (CA), who has been the Institute's Executive Director, Education for more than 15 years.  In this role he is responsible for the CA qualification system, much of the exam activity, commercial and policy-related matters as well as a number of international benchmarking and reciprocity activities.  

Prior to joining ICAS, Mark qualified as a CA, originally with KPMG.  Mark is a visiting Professor at Robert Gordon University, a role he has carried out for 10 years.  He chairs the ICAS TPS Examination Panel, the ICAS BPP joint venture, and has recently taken on the role as Chair of the Audit Committee of the Royal College of Surgeons and Physicians of Glasgow.  

Mark is a member of the QAA Scotland Committee, the Global Accounting Association Education Directors Group and from 2009 – 2011 was Chair of the International Accounting and Education Standards Board.

Atholl Duncan, Executive Director, UK and Global

Atholl DuncanAtholl joined ICAS in 2011 following a distinguished career in broadcast journalism and corporate communications.

He is a former executive at the BBC – where he led a team of 270 journalists who delivered news, current affairs, political coverage and investigative journalism on radio, television and online. In his current role, he leads the Members’ Division and is responsible for key areas of delivering the strategy of "Building the Leading Global, Professional Community" by increasing engagement and growing communities among the 21,000 members across the UK and in 100 countries around the world. He is also responsible for digital, commercial services, events, partnership, brand, marketing, and media relations and plays a key role in ICAS’s work with politicians at Holyrood and Westminster.

Atholl is the senior non-executive director of the British Horseracing Authority, which runs the UK’s second largest spectator sport.  He is a former Director of Corporate Affairs at Scottish Water.  He served as a non-executive director at Sportscotland for more than eight years and was also a founder and trustee of the Hibernian FC Community Foundation.

Lesley Glen, Chief Operating Officer

Lesley GlenLesley Glen is Chief Operating Officer at ICAS, with responsibility for the Finance, Facilities and HR teams.

Lesley graduated from Glasgow University gaining an LLB with Honours in Public International law. Lesley undertook her accountancy training with Strathclyde Regional Council, becoming a CIPFA member and prizewinner. 

Lesley moved away from the local authority sector shortly after qualifying, spending a number of years in the education sector before joining ICAS. Lesley is a member of the Audit Committee at SRUC.

Michelle Mullen, Executive Director, Regulation

Michelle MullenMichelle Mullen joined ICAS in 1998 as a trainee solicitor and was appointed Executive Director in 2011. 
 
She has a wealth of regulatory experience after nearly 20 years working within the chartered accountancy profession. As the Executive Director, Michelle has responsibility for the various regulatory functions of ICAS, ensuring that ICAS is a leading regulator and that our 20,000 CA Members and 1,000 Firms and Affiliates adhere to the highest professional and technical standards. 
 
Michelle is a qualified solicitor and has developed particular interests in professional governance, regulatory law and policy and public interest discipline.

David Wood, Executive Director, Technical Policy

David WoodDavid Wood is Executive Director, Technical Policy, at ICAS - which means he is responsible for all of the Institute's technical activity in the fields of accounting, auditing, company law, tax, etc, including research and various proactive initiatives in these areas. He is also responsible for supporting the Institute's practising firms, including the provision of guidance and advice, and the development of relevant products and services.

David was born in 1961 and studied at St Catherine's College, Cambridge University, gaining a BA(Hons) in Mathematics in 1983 and an MA(Cantab) in 1986. 

He has been an ICAEW member for 27 years and an ICAS member for 19 years. David originally worked for Ernst & Young in England and New Zealand, and joined the ICAS technical team in 1993. He was appointed Executive Director in December 2004.

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