The Time line of the British Army since 2000, lists the conflicts and wars the British Army were involved in.

• Sierra Leone Civil War (2000)
• Yugoslav wars (ended 2001)
• Iraq War (2003–2011)
• War in Afghanistan (2001-2021)
• War On Terror (2001–present)
• Military intervention against the Islamic State of Iraq and the Levant (2014– 9 December 2017)
• Iraqi Civil War (2014–2017)
• Mosul offensive (2015)
• Mosul offensive (2016)
  • Battle of Mosul (2016–2017)

• Timeline of the British Army
• Timeline of the British Army 1700–1799
• Timeline of the British Army 1800–1899
• Timeline of the British Army 1900–1999