This is a list of 2006 British incumbents.

• Monarch
  • Head of State – Her Majesty Elizabeth II, Queen of the United Kingdom (1952–2022) ^[1]

• Prime Minister
  • Head of Government – Tony Blair, Prime Minister of the United Kingdom, First Lord of the Treasury and Minister for the Civil Service (1997–2007) ^[2]
• Deputy Prime Minister
  • Deputy Head of Government – John Prescott, Deputy Prime Minister of the United Kingdom and First Secretary of State (1997–2007) ^[2]
• Chancellor of the Exchequer
  • Head of the Treasury – Gordon Brown, Chancellor of the Exchequer and Second Lord of the Treasury (1997–2007) ^[2]
• Foreign Secretary
  1. Jack Straw, Secretary of State for Foreign and Commonwealth Affairs (2001–2006) ^[2]
  2. Margaret Beckett, Secretary of State for Foreign and Commonwealth Affairs (2006–2007) ^[2]
• Secretary of State for the Home Department
  1. Charles Clarke, Secretary of State for the Home Department (2004–2006) ^[2]
  2. John Reid, Secretary of State for the Home Department (2006–2007) ^[2]
• Secretary of State for Environment, Food and Rural Affairs
  1. Margaret Beckett, Secretary of State for Environment, Food and Rural Affairs (2001–2006) ^[2]
  2. David Miliband, Secretary of State for Environment, Food and Rural Affairs (2006–2007) ^[2]
• Secretary of State for Transport
  1. Alistair Darling, Secretary of State for Transport (2002–2006) ^[2]
  2. Douglas Alexander, Secretary of State for Transport (2006–2007)
• Secretary of State for Scotland ^[2]
  1. Alistair Darling, Secretary of State for Transport (2003–2006) ^[2]
  2. Douglas Alexander, Secretary of State for Transport (2006–2007)
• Secretary of State for Health ^[2]
  • Patricia Hewitt, Secretary of State for Health (2005–2007) ^[2]
• Secretary of State for Northern Ireland
  • Peter Hain, Secretary of State for Northern Ireland (2002–2007) ^[2]
• Secretary of State for Defence
  1. John Reid, Secretary of State for Defence (1999–2006) ^[2]
  2. Des Browne, Secretary of State for Defence (2006–2007) ^[2]

• Archbishop of Canterbury
  • Rowan Williams, Archbishop of Canterbury (2003–2012)
• Archbishop of York
  • John Sentamu, Archbishop of York (2005–present)

• Prince consort
  • The Duke of Edinburgh (m. 1947)
• Heir apparent
  • The Prince of Wales (since 1958)