The UK’s 2025 Carrier Strike Group (CSG) returns home this weekend after an eight-month deployment across the Indo-Pacific, wrapping up Operation Highmast with the force formally declared fully operational and ready for NATO duties.

HMS Prince of Wales leads the homecoming, arriving in Portsmouth on Sunday with HMS Dauntless and Norway’s HNoMS Roald Amundsen. HMS Richmond heads for Plymouth, while F-35Bs, Merlins, Wildcats and drones return to their bases across England. Tanker RFA Tideforce docks in Portland, though RFA Tidespring remains deployed.

The deployment involved more than 4,000 UK personnel at its height and saw the CSG operate with 30 nations, visit 12 countries and complete over 2,500 aviation sorties. Ships and aircraft covered more than 40,000 nautical miles, spending roughly half the deployment east of Suez.

Commodore James Blackmore, who commanded the group, said the task force returns “stronger for NATO than it departed” and credited those who built up Carrier Strike to this point. He highlighted the declaration of full operating capability as the major milestone of 2025, calling it proof that the Queen Elizabeth-class carrier and F-35B force is now a mature front-line capability.

HMS Richmond’s Executive Officer, Lieutenant Commander James Callender, said he “could not be prouder” of his ship’s work, from enforcing UN resolutions in the Yellow Sea to high-level engagement across the region.

The deployment’s signature achievements included operating with nine other carrier groups, UK F-35Bs landing on four foreign carriers, hosting 28 VVIPs, and welcoming more than 4,000 registered visitors. Eighty-two British companies used the task group for export activity, with officials estimating more than £17 billion in potential economic impact.

Across the force, the air wing reached a scale not previously achieved by a UK carrier: 24 fifth-generation jets at peak. Other milestones included the first F-35B landing on the Japanese carrier Kaga, the first UK-India dual-carrier exercise, and the first UK carrier group visit to Australia since 1997. HMS Prince of Wales became the first carrier to berth at cruise terminals in Tokyo and Singapore, and Prime Minister Keir Starmer became the first premier in a generation to stay overnight aboard a Royal Navy warship.

For Norway, Highmast marked a historic voyage: HNoMS Roald Amundsen sailed farther east than any previous Norwegian warship and visited India, Japan and Singapore while operating with a UK Wildcat helicopter embarked.

Commander Nick Smith, leading 809 Naval Air Squadron on its first operational deployment, said the squadron delivered everything asked of it, from cross-deck flying with US, Italian and Japanese carriers to major exercises such as Talisman Sabre. He described his team as “incredibly proud” to have helped deliver Carrier Strike’s full operating capability.

Logistics and support units notched their own firsts. Drones from 700X carried out uncrewed resupply missions between ships, and the CSG supported UN sanctions enforcement on North Korea, NATO security tasks in the Mediterranean, and extensive diplomacy and industry outreach across Asia.

Personnel also encountered the more human side of deployment: international sports fixtures, visits to major cities and cultural sites, traditional naval ceremonies, and a remembrance service over the wreck of the wartime HMS Prince of Wales in the South China Sea.

As Petty Officer James Smith of HMS Richmond put it, the deployment provided tough professional challenges and unusual personal perks. “Professionally, Highmast has been fantastic,” he said. “Personally, the chance to play golf all over the world has been a real highlight.”

George Allison
George Allison is the founder and editor of the UK Defence Journal. He holds a degree in Cyber Security from Glasgow Caledonian University and specialises in naval and cyber security topics. George has appeared on national radio and television to provide commentary on defence and security issues. Twitter: @geoallison

21 COMMENTS

  1. Many Congrats to everyone involved. A great achievement. And what a fantastic adventure it must have been for all the young men and women. So many stories to tell their mates!
    I so hope there was a camera crew embedded on POW.

  2. Well done to all the crews from across the world on CSG 25

    And thanks Norway for leading us your ships,

    What an amazing feat for a small nation.

  3. A phenomenal achievement given the slender resources and work arounds.

    Everyone involved will genuinely have learned masses.

    Hopefully things will get better once all the new frigates come online, T45 finishes PiP and 2.6% defence spend becomes reality.

    • When should all the PIPs be done ?

      Not only that but we have been running with only 5/6 destroyers for years, what a decade? So to have PIP plus Daring back is brilliant

    • SB,
      You Brits may have perfected the just-In-time (JIT production philosophy/modus operandi. Interesting high-wire act, may God always favor Mad Dogs and Englishmen. 😁👍🇬🇧

      • Hmm, you have a point mate,

        Doesn’t do much for the nerves or blood pressure of many on here though 🙂 .

        Hopefully, we will be just in time, this time around as well.

        Cheers CR

      • I really hope we get it sorted.

        It has got a bit ridiculous with no Solid Stores, few submarines and not many frigates….

        RN always have been the masters of improvisation but you do need something to improvise with….

        • It needs a concerted and none stop building effort.. especially the T26 needs to flow seamlessly into the T83 and the T31 just needs continuous production.. the reality is both yards can produce none stop until the mid 2040s and that will get the UK back to a 30 escort navy…

          • That’s not happening. There is no desire or drive for more crewed escorts, t31 will be 5 ships and Babcock will have to find other work

            T83 will be delayed due to the Norweigan order being built as well but they probably prefer that as it will be extremely expensive

    • 2.6 % GDP is half what’s needed. The latest Budget is a scam to spend at least an extra 30 bn on Welfare. That money is desperately needed for other expenditure; Defence and new power generation before the lights go out. Write to your MP to ask for a change of direction and for less tax drag on the UK economy.

      • A real 2.75% is what I have advocated for in the past.

        That *excludes* nonsense like Chagos Islands etc being wedged into the defence budgets.

        Strip out all the moved money “It is just moving money” is a favourite killer Treasury phrase and use real money. DNE gets none of the uplift. In fact DNE needs a totally separate budget from conventional, intelligence etc

        That way conventional goes from ~1.5% to ~2.15% which is what is needed.

  4. Congrats. I can’t imagine the work and effort required to pull this off from years in advance, with ever lessening resources and ever longer delays. Thank you to all the countries that helped by joining both in exercises and the carrier group itself. We really needed our allies for this. The highlight for me was getting 24 UK F-35s on the carriers just because we said we would, and we did. It was also great to read of the carriers using the Malloy T-150s, and I hope they made best use of them.

    Biggest disappointment was the lack of press communications as to what the group was doing during the first few months of the deployment. The rumours about planes flying to and from the group that weren’t true and weren’t contradicted, totally unnecessarily. Biggest lesson to learn might be that global deployments of F-35s require a global mobile maintenance facility, because you never know where they’ll end up.

  5. Yes magnificent effort all round very few countries could pull off with the help of reliable allies of course!
    There will be pain for a few years to come with the t23s retiring but roll on the new frigates and t45 upgrades and hopefully sort the Astutes backlog there is light at the end of the tunnel.

  6. Hats off to all of you… Very well done and a very merry Christmas at home to you all 🇬🇧🇬🇧🇬🇧🇬🇧🍻🍻🍻

  7. One bit of good news worth mentioning is that it’s seems shipborne vertical rolling landing has not been cancelled.. it has instead been realigned with other complex weapons programmes..

    My interpretation is.. until we have really large expensive weapons we cannot afford to dump we are going to keep tinkering with it.

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