Simpson joined the Scottish brewer Scottish & Newcastle in 2002. His role included responsibility for issues concerning legislation and regulation as well as those relating to alcohol policy. He was also responsible for the development and implementation of the company's Corporate Responsibility strategy.Kieran was appointed as a brewing representative on the Board of Directors in May 2004. He was S&N's representative on the Board of the International Center for Alcohol Policies, a member of the Scottish Ministerial Advisory Committee on Alcohol Problems (SMACAP) and a member of the Executive Board of the Brewers of Europe. .
Before joining Heineken Simpson worked for S&N and prior to that was one of the Special Advisers to the New Labour government from 1997-2002, during which time he held positions as special adviser to the Government Chief Whip, and special advisor to the former Ministry for Agriculture, Fisheries and Food, and the Employment Minister. From 1994-1997 he worked in the Labour Party's Policy Directorate, Opposition Treasury Team and Whip's Office. Described as a long-time aide of Nick Brown, the former Agriculture Minister, Simpson was also Chair of Scottish Labour Students at Edinburgh University. Also worked on Gordon Brown’s economic team in Opposition, and in Whips’ Office.
- International Center for Alcohol Policies Board Member
- European Research Advisory Board(ERAB, an alcohol research institute) Board of Directors since 2004.
- Scottish Ministerial Advisory Committee on Alcohol Problems (SMACAP) board member
- Brewers of Europe member of the Executive Board
- Info-Dynamics Research, "Where are they now? The 1997/1998 Special Advisers to the Labour Government", GMB: April 2006 Briefing, p6, accessed 12.09.10
- Responsibility Deal Alcohol Network Department of Health 30th November 2010, Accessed 21st January 2011
- S&N Company Website Kieran Simpson Last Accessed October 1st 2007.
- Kieran Simpson's Zoom Profile Last accessed 1st October 2007.
- Martin McElwee,(2000), Centre for Policy Studies, THE GREAT AND GOOD? THE RISE OF THE NEW CLASS
- ERAB Website Directors Last accessed November 30th 2007