Commander UK Task Group

Joint Expeditionary Force (Maritime)
HMS Albion (the then Fleet Flagship), RFA Fort Rosalie and HMS Ocean of the RFTG conducting replenishment at sea during Cougar 11
Active	2010–present
Country	United Kingdom
Branch	Royal Navy
Role	Expeditionary & Direct Fleet Operations
Part of	United Kingdom Task Group
Garrison/HQ	Stonehouse Barracks, Plymouth
Engagements	Operation Ellamy 2011
Commanders
Current commander	Cdre Andrew Burns

Joint Expeditionary Force (Maritime) (or JEF (M)) (formerly Response Force Task Group (RFTG)), is the Royal Navy's expeditionary task force maintained at high-readiness and available at short notice to respond to unexpected global events. In addition to the Royal Navy and the Royal Marines, the RFTG also includes elements of the British Army and the Royal Air Force. While it is primarily poised to conduct war-fighting or amphibious operations, the JEF (M) is capable of undertaking a diverse range of activities such as evacuation operations, disaster relief or humanitarian aid.

The JEF (M) (formerly RFTG) was established under the 2010 Strategic Defence and Security Review. Since its establishment, the JEF (M) has seen six successive years of deployments to the Mediterranean Sea and East of Suez to the Persian Gulf and the Indian Ocean. The JEF (M) also deployed on operations during the 2011 Libyan Civil War and provided humanitarian aid during Typhoon Haiyan in 2013.

The RFTG is now known as the Joint Expeditionary Force (Maritime) (JEF (M)).

JEF (M) is directly commanded at sea by Commander Amphibious Task Group (COMATG), typically an officer the rank of Commodore. COMATG is in-turn subordinate to Commander United Kingdom Maritime Forces (COMUKMARFOR) who is responsible for directing "UK, Allied or Coalition maritime forces anywhere in the world".

Commander UK Task Group has been as follows:

From March 2015 the title changed from COMUKTG to Commander Amphibious Task Group (COMATG).

The "scaleable nature of the Response Force Task Group" means the Royal Navy assigns a wide range of relatively significant assets to the force, with its composition changing depending on the scenario and the range of ships available.

In April 2011, the Response Force Task Group deployed for the first time since its announced establishment in October 2010. The deployment was "designed to demonstrate the versatile capabilities and high readiness" of the Response Force Task Group and engage with foreign allies in the Mediterranean Sea and East of Suez. On 9 May (en route to Cyprus), 7 Senior NCOs and the Officer Commanding the Support Troop from 6 Assault Squadron Royal Marines held a service of remembrance at the Souda Bay Commonwealth Grave site in Crete to commemorate the 70th anniversary of the bitter battle for the island.Cougar 11 saw, for the first time, British Army AgustaWestland Apache attack helicopters operating from the decks of a Royal Navy warship, HMS Ocean.