Executive Recruitment

The Authority

The SIA comprises four directorates: Operations, Partnerships & Interventions, Corporate Services and Strategy, Policy & Communications. Each directorate is composed of smaller teams that are responsible for specific areas of day-to-day operations. The SIA Board is currently comprised of:


Elizabeth France, Chair

Elizabeth France was appointed Chair of the SIA Board in January 2014. She is also Chair of the Police Advisory Board for England and Wales, Deputy Chair of the Regulatory Decisions Committee of the FCA and the Enforcement Decisions Committee of the Payments Systems Regulator, and a Member of Ofgem's Enforcement Decisions Panel.

Elizabeth was a non-executive Director of the Serious Organised Crime Agency (2005-2010), Chair of the Office for Legal Complaints (2009-2014) and a member of British Transport Police Authority (2010-2018).

Elizabeth began her career in the Home Office in 1971 leaving to become Data Protection Registrar in 1994 (she was appointed Information Commissioner in 2001). In 2002 she was appointed Chief Ombudsman and Chief Executive of Ombudsman Services Ltd.

Elizabeth has been awarded honorary doctorates by the Universities of De Montfort, Loughborough and Bradford and is a Fellow of Aberystwyth University (where she completed her term as Pro Chancellor in 2018). In June 2002 she was awarded a CBE, for services to data protection.


David Horncastle

David Horncastle joined the SIA Board in March 2015 as a non-executive director.

David studied physics at Oxford University and spent several years working in the UK nuclear power industry. He then joined BT, and held many roles over a 30 year career through to March 2015. His experience has included a range of positions in IT, product and portfolio management, strategic planning, and programme delivery both in the UK and internationally. From 2009 David was Director of Security Professional Services in BT Security, responsible for both the protection of BT and the delivery of security services and solutions to customers.


Sir Ian Johnston

Sir Ian Johnston joined the SIA Board in February 2014.

Sir Ian is a Deputy Lieutenant for London, a trustee of the Suzy Lamplugh Trust, and a member of the Audit Committee for the British Museum. Previously, Ian was the Director of Security for the London Organising Committee for the Olympic and Paralympic Games, after a 44 year police career, including 8 years as Chief Constable of the British Transport Police and 7 years as Assistant Commissioner in the Metropolitan Police.

Ian McKay

Ian McKay joined the SIA Board in March 2018 to represent the interests of Scotland.

Ian also serves as Independent Chair of the Scottish Police Negotiating Board, which considers police officer terms and conditions in Scotland, and chairs the Scottish Police Consultative Forum.

Elsewhere, Ian is a member of the Scottish Advisory Committee for the telecoms regulator, Ofcom. He also chairs the Business Advisory Board at Stirling University Management School, where he is an Honorary Professor.

Ian was previously the Director of Scottish Affairs for Royal Mail Group in Scotland, and held senior positions with the Educational Institute of Scotland and at Stevenson College Edinburgh. He has been a leading member of the Institute of Directors in Scotland for some years and remains a member of the IoD UK Council. He was previously a longstanding member of the Scottish Council of the CBI and the Executive Committee of the Scottish Council for Development and Industry.

Ian served as inaugural Chairman of the Board of Edinburgh College and was a Board member at Colleges Scotland, the sector body for Further Education in Scotland, where he chaired the Employers’ Association for the sector. He was previously a member of the UK NHS Pay Review Body, and served on the boards of Lothian Buses plc. the Scottish Business Crime Centre, the Centre for Confidence and Well-Being, Arts & Business Scotland, and the Edinburgh UNESCO City of Literature Trust.

He lives in the Borders with his wife Ruth, who is a Headteacher in Edinburgh.

Trevor Reaney

Trevor Reaney joined the SIA Board in November 2018 to represent the interests of Northern Ireland. He was formerly the Clerk and Chief Executive to the Northern Ireland Assembly between 2008 and 2016.

Trevor is currently a member of the National Assembly for Wales Remuneration Board and an independent Member of the Audit and Scrutiny Committee of the Mid and East Antrim Borough Council.

He began his career in the hospitality industry and has held a number of management positions in both the private and public sectors. Before joining the Assembly, Trevor served as Chief Executive of the Northern Ireland Policing Board from January 2004, and prior to that, he held the post of Chief Executive at Craigavon Borough Council from 1996 to 2003.

Trevor is a graduate of the Open University, obtaining a Master’s degree in Business Administration. He has also undertaken studies at the Federal Executive Institute, Charlottesville, USA, JFK School of Government at Harvard University, and with the Institute of Directors.

Geoff Zeidler

Geoff Zeidler joined the SIA Board in December 2013 as a non-executive director with private security industry experience.

Geoff studied Manufacturing Engineering at Cambridge University and went on to work as a Strategy Consultant at Bain & Co; and Director of Corporate Finance at Flemings. In 1997 he joined Spirent plc, the telecoms technology company, first as Director of Business Development; and then as President of the Europe and Wireless operations.

In 2006 Geoff became Commercial Director for the Forensic Science Service where he worked closely with the police and Home Office on the development of both the company and the commercialisation of the forensic services market.

In 2008 he was appointed Country President and MD of Securitas UK & Ireland. In 2010 he led the acquisition and integration of Reliance and Chubb to establish the second largest company in the manned guarding industry. Geoff left Securitas in June 2013.

In 2011 Geoff was elected Vice Chairman of the BSIA and became Chairman in 2012. He has been a member of the SIA's Strategic Consultative Group since its inception. He is now a Partner with Wyvern Partners working as an advisor and investor with companies in the business services, technology, security and justice markets.