Our management structure

While our strategic direction is set by our Board, SEPA is managed by our Chief Executive and Agency Management Team.

The Agency Management Team (AMT) is led by Terry A'Hearn, our Chief Executive Officer (CEO), and includes two Executive Directors and three Chief Officers.

Reporting directly to the Board, the AMT is responsible for strategic planning, business management, performance management, relationships and change management.

Each Executive Director and Chief Officer is also responsible for the management of a flexible business portfolio within the organisation:

Executive Director, Calum MacDonald

  • Transformational Change
  • National Operations
  • Regulation
  • Legal
  • Business Development
  • Administration
  • SEPA Contact Centre

Calum MacDonald joined SEPA in 1996 as Divisional Manager in the former west region.

He became Environmental Regulation and Improvement Manager for Highlands, Islands & Grampian, before becoming Environmental Development Manager in the Strategic Planning Directorate in 2001. He became Acting Director of Strategic Planning in 2003. His career has included various posts with City of Glasgow Council, in environmental health and pollution control.

Calum is a member of the Royal Environmental Health Institute of Scotland and Chairman of Council of the National Society for Clean Air and Environmental Protection.

Executive Director, David Pirie

  • Chemistry
  • Ecology
  • Hydrology
  • Environmental Quality
  • Environmental Strategy
  • Business Development
  • Information Services
  • Programme Management Office
  • Risk
  • Internal audit  

David Pirie joined SEPA in 1996 as a Senior Chemist. He became South West Chemistry Unit Manager in 1999, Chemistry Services Manager in 2001 and Head of Chemistry in 2004.

His career has included posts with the Water Research Centre, University of Aberdeen and the Clyde River Purification Board.

David has a degree in Chemistry from the University of Aberdeen and a PhD in Environmental Chemistry from the University of Glasgow. He is a Chartered Chemist and a member of the Royal Society of Chemistry.

Chief Officer Resources, Fiona Martin

  • Organisational Development
  • Human Resources
  • Learning & Development
  • Facilities, Estates & Procurement
  • Health &Safety

Fiona Martin joined SEPA in 2004 as Human Resources Manager. She is a Fellow of the Chartered Institute of Personnel and Development (CIPD) and has worked in a range of posts within the local government and retail sectors.

Fiona is also a qualified and practising mediator.

Chief Officer Governance, Allan Reid

  • Executive Support 
  • Strategic Partnerships 
  • Clerk to the Board
  • Communications 
  • Corporate Legal Services
  • Resilience

Allan Reid joined SEPA in 1996, as Business Development Manager for the former West Region, based in East Kilbride.

In 2000, he took up a senior management role in the Operations Directorate, based in Edinburgh, before taking up the post of Head of National Environmental Protection and Improvement , focusing on Waste Management, Radioactive substances and Environmental Crime . 

From 2008, Allan worked as Chief Officer on SEPA’s change agenda, with special responsibilities for better regulation strategy, Environmental Clean Technologies (ECT), Business and Enterprise and Government Relations.  

In 2012, Allan took up the role of Chief Officer, Governance and Clerk to the Board, with responsibilities for Corporate Governance throughout the Agency, and additional responsibilities for the Agency Board, Corporate Communications, Corporate Legal, Resilience, Government and Ministerial relationships and external and European engagement.  

Previous posts have included Marine Science management and a variety of regulatory roles across central and southern Scotland. 

Allan holds an MA (Hons) in Politics and economics as well as an MBA and is a member of the Chartered Institution of Water and Environmental Management and a Chartered Environmentalist.

Chief Officer Finance, Stuart McGregor

  • Financial Governance
  • Financial Services
  • Management Accounts
  • External Audit

Having previously been employed in a number of senior finance roles for SEPA, Stuart McGregor rejoined the organisation in 2014 as Chief Officer Finance.

Stuart has worked in a number of posts within local government, Scottish policing and the retail, manufacturing and engineering sectors and is a member of the Chartered Institute of Management Accountants.

If you require any more information about our management structure or how we operate on a strategic basis, please contact us.