The UK Has Two Aircraft Carriers. In 2010, It Only Promised to Commission One.

The United Kingdom has two aircraft carriers, HMS Queen Elizabeth and HMS Prince of Wales, according to the Royal Navy’s own fleet list, checked in October 2026. There are none in reserve and none on order.

That number nearly came out differently. The 2010 defense review committed to commissioning only one of the two ships then being built, and the second could have been mothballed or sold.

How Many Aircraft Carriers Does the UK Have?

Two. HMS Queen Elizabeth was commissioned on Dec. 7, 2017, and HMS Prince of Wales followed on Dec. 10, 2019. Together they make up the Queen Elizabeth class, the largest warships ever built in the UK.

Each is 932 feet (284 m) long and displaces 65,000 metric tons. Each can run on a crew of 679 and hold up to 1,600 people with the air group and Royal Marines aboard.

What the Count Includes, and What It Leaves Out

The headline number is simple. The interesting part is the row of zeros beneath it, because Britain has given up every other flat-topped ship it used to run.

Two carriers does not mean two strike carriers at once. As of October 2026, Prince of Wales holds the job of flagship and high-readiness strike carrier, and Navy Lookout reports that Queen Elizabeth is being prepared to take it over in late 2027.

Both ships were at work in autumn 2026, in different roles. Prince of Wales sailed from Portsmouth on Oct. 18, 2026, to lead the second phase of Operation Firecrest in the Arctic and North Atlantic.

Queen Elizabeth finished her first major refit, a program that began in November 2024 and included eight months in dry dock at Rosyth. She was due to leave Portsmouth on Sept. 5, 2026, for a three-month deployment as a NATO command ship.

The tighter limit is the jets. Janes counted 43 operational F-35Bs in April 2026, out of 48 delivered, with one lost in an accident and four on test duties in the US.

Parliament’s Public Accounts Committee defined full capability as up to 24 jets on one carrier. Filling both decks to that level would take 48 jets, five more than Britain has operational. For context, see how many planes an aircraft carrier holds.

Why the Numbers Differ

Nearly every current source says two, but the numbers around it cause real confusion. The first cause is the definition of a carrier.

World Population Review’s 2026 ranking credits France and Japan with four carriers each, because it counts helicopter carriers as well. By that broader test, Britain’s count stood at four from 1998 to 2005. Today the broad count and the strict count are both two.

Older pages can also be out of date. HMS Ocean left the Royal Navy in March 2018 and now sails for Brazil, and RFA Argus, a helicopter training and casualty ship, was confirmed for the scrapyard in February 2026.

Assault ships cause a similar mix-up. HMS Bulwark and HMS Albion were amphibious ships, never carriers. The UK confirmed Bulwark’s £20 million sale to Brazil on Aug. 28, 2026, and Albion is awaiting disposal at Devonport.

Then there is the suggestion that Britain is about to have one. In November 2024 The Telegraph reported that mothballing a carrier was discussed in Treasury cost-cutting talks, and a Royal Navy source replied, “We are not looking to go down to one.” Both ships still sail.

How the Number Got Here

Britain has been at two before, but with very different ships. The table below counts flat-topped ships in commission at each change, from the year the third Invincible-class carrier joined the fleet.

The hole in the middle came from one review. The October 2010 Strategic Defence and Security Review ordered Ark Royal retired early, and the Harrier fleet made its last operational flights that December, years before a replacement could reach the deck.

The same review said only one of the two new ships was certain to be commissioned. Plans held the other in reserve, a status the National Audit Office said meant at least a year’s notice to bring it back.

That lasted until the 2014 NATO summit in Wales, where Prime Minister David Cameron announced Prince of Wales would enter active service rather than be sold off or mothballed. It is the reason the count reads two today.

Commissioning did not restore the capability on its own. F-35Bs began trials on Queen Elizabeth in 2018, and her first combat strikes came on June 18, 2021, over Iraq and Syria.

Further back, the number was far higher. 19FortyFive puts the Royal Navy’s 1945 peak at more than 50 carriers of all types, counting escort carriers.

How Britain Compares

Two carriers put the UK behind the US Navy’s 11 and China’s three. It is ahead of France, whose Charles de Gaulle is its only fixed-wing carrier, and Russia’s one, which has not put to sea since 2017.

Britain’s real advantage over France is the second hull. When one Queen Elizabeth-class ship goes into a yard, the other can keep sailing, as Prince of Wales did during Queen Elizabeth’s refit. The 2026 Defence Investment Plan lists £510 million for the class and names no third ship, so nothing on paper changes the count.