Sir David Omand GCB was appointed in 2002 to the post of UK Security and Intelligence Co-ordinator, which controls the overall direction on behalf of the PM of the national counter-terrorism strategy and 'building national resilience' (“homeland security”). He was the Government’s chief crisis manager for civil contingencies. 
He worked in the Ministry of Defence from 1970 to 1985, and has been Deputy Secretary for Policy, Under Secretary in charge of the defence programme, and Principal Private Secretary to the Secretary of State (1981-82) serving in that capacity during the Falklands War. In 1985 he moved to Brussels, working on loan to the Diplomatic Service as the Defence Counsellor to the UK Delegation to NATO. He was particularly concerned in MOD with the reshaping of the long term equipment programme of British nuclear deterrence policy at the end of the Cold War. He served for seven years on the UK’s Joint Intelligence Committee (JIC) and gave evidence to the Scott Inquiry on August 27 — a John Scarlett 07/07/03 note to Omand directly relates to Andrew Gilligan's contact with David Kelly. 
He retired in April 2005. He is a regular speaker on security and intelligence and on the 'ethical dimension of leadership'.
- Royal United Services Institute Elected member of Council
- Bilderberg 2013 Watford attendee
- Member of the "Cybersecurity Advisory Panel of the Global Cyber Security Capacity Centre"
- Visiting Professor at the King's College Department of War Studies 2005-present 
- Non Executive Director at Finmeccanica UK (2005-11).
- Companion of the Chartered Management Institute
- Deputy Chairman of the Windsor Leadership Trust
- Chairman of the Government's Centre for Management and Policy Studies.
- National Security and Resilience, RUSI, accessed 9 July 2009.
- Appointment of Security and Intelligence Co-ordinator and Permanent Secretary, Cabinet Office, Number10.gov.uk, 20 June 2002, accessed 9 June 2009.
- Jonathan Keeling (2011) ‘Freedom of Information Act 2000 Request to Mr Rizwaan Sabir’, FOI311393, Cabinet Office, 25 March 2011
- Evidence referred to on 20 August 2003 - morning, Hutton Inquiry, accessed 9 June 2009.
- Sir David Omand GCB, Windsor leadership Trust, accessed 9 June 2009.
- Extract of Letter from Sir David Omand to Foreign Secretary, Cabinet Office via National Archives, accessed 9 June 2009.
- David Omand, King's College London, accessed 27 September 2016.
- David Omand, LinkedIn Profile Page, accessed on 12 September 2016.