The Assistant Chief of the Defence Staff (ACDS) is a senior British military officer. There are a number of ACDS appointments and they are held by officers of two-star rank (rear admiral, air vice-marshal, or major general). They work in the Ministry of Defence.

the names of the Officers of the Assistant Chief of the Defence Staff is given below

Assistant Chief of the Defence Staff (Health)
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The ACDS(H) reports to the Surgeon General.
Surgeon Rear Admiral Lionel Jarvis (2008–2011)
Major General Jeremy Rowan (2011–2014)
Surgeon Rear Admiral Alasdair Walker (2014–2015)
Major General Martin Bricknell (2015-present)

Assistant Chief of the Defence Staff (Capability & Force Design)
Air Vice-Marshal Graeme A. Robertson (1994-1996)
Rear-Admiral Nigel R. Essenhigh (1996-1998)
Major-General John P. Kiszley (1998-2001)
Rear-Admiral Rory A.I. McLean (2001-2004)
Rear-Admiral Timothy J.H. Laurence (2004-2007)
Air Vice-Marshal Kevin J. Leeson (2007-2009)
Rear-Admiral Alan D. Richards (2009-2011)
Major-General Mark W. Poffley (2011-2014)
Rear Admiral Timothy Fraser (2014–2017)

Assistant Chief of the Defence Staff (Intelligence Capability
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The ACDS(IC) reports to the Chief of Defence Intelligence.
Major General Jerry Thomas (2009–2012)

Assistant Chief of the Defence Staff (Operations)
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Rear Admiral David Brown (1980–1982)
Air Vice-Marshal Clive Loader (2002–2004)
Major General Nick Houghton (2004–2005)
Major General Chris Nickols (2005–2008)
Air Vice-Marshal Andrew Pulford (2008–2010)
Major General David Capewell (2010–2011)
Air Vice-Marshal Bob Judson (2011–2013)
Major General Patrick Sanders (2013–2015)
Air Vice-Marshal Edward Stringer (2015–present)