Armilla patrol

The Armilla patrol is the British Royal Navy's permanent presence in the Persian Gulf.

The Royal Navy withdrew its forces from the Persian Gulf in 1971 in line with the UK's general retreat from imperial commitments. However, tensions in the area remained high and Royal Navy ships were still a frequent sight in the area. In 1980 war broke out between Iraq and Iran. In response to the increased danger to British shipping and other British interests, a Royal Navy escort vessel was sent to the Gulf and at least one has remained there ever since. In addition to the surface combatant, the Royal Navy has also maintained an auxiliary of the Royal Fleet Auxiliary (RFA) in the Gulf.

Typical Armilla patrol deployments last for six months or so, with the supporting RFA vessel sometimes spending an aggregate total of over a year in the area. The patrol is reinforced, with an aircraft carrier or task group in times of high tension or British involvement in wartime operations or by frigates or destroyers transiting the area for other operations in the Far East or Pacific.

Beginning in 2006 the surface combatant deployed has been tasked with patrol in the Persian Gulf and as part of Operation Oracle, the UK's assistance to the United States in its operations in the Arabian Sea, along with flexibility in tasking for operations in the Far East and Pacific.

The largest British presence in the Gulf during the Armilla patrol has been during the two operations against Iraq. In 1991, eight Royal Navy ships supported by a number of RFA vessels were sent to the area. In 2003 over 30 British warships and auxiliaries were involved in the invasion of Iraq. A number of vessels, including minesweepers, survey vessels and submarines, are periodically rotated through the area to provide additional capability.