Thales has announced the completion of key factory tests on the mission and combat systems that will equip the Royal Navy’s new Type 31 Inspiration-class frigates, describing the results as a major step forward in the £2 billion programme.

According to the company, Factory Acceptance Tests (FAT) for the Mission System were completed in April 2025, followed by the Combat System tests in June. Both are now moving to land-based trials at the Shore Integration Facility ahead of installation aboard HMS Venturer, the first of the five-ship class under construction at Rosyth.

At the centre of the frigates’ capability will be Thales’ TACTICOS Combat Management System, developed in the Netherlands. The system functions as the operational core of the ship, providing sensor control, picture compilation, situation assessment, action support and weapon control.

James Wooldridge, Thales Programme Director for Type 31, described the milestone as the result of sustained effort: “This has been an incredible achievement over the last 18 months in terms of learning, building, collaborating and holding steadfast towards delivering this mission-critical commitment to our customer. The team has demonstrated some incredible resilience, innovation and commitment.”

The programme is being delivered by an international consortium, with Babcock leading construction at Rosyth. Paul Watson, Arrowhead Managing Director at Babcock, said: “The successful completion of the Mission and Combat Systems FATs marks another significant step forward for the Type 31 programme and reflects the strength of our collaboration with Thales and our wider industry partners. Together, we are delivering a world-class capability for the Royal Navy and creating a strong foundation for the future of the Inspiration Class frigates.”

Andy Laing, Managing Director of Above Water Systems UK at Thales, added: “Working closely with our Royal Navy and Babcock colleagues, we are delighted to have successfully completed this critical stage in the development of the Royal Navy’s new Type 31 frigates. It represents another demonstration of Thales’ proven ability to deliver integrated naval mission systems to the highest standards.”

The completion of both FATs brings the project into a new phase, with the systems now prepared for integration and sea trials in the second half of the decade. The announcement follows steady progress on the physical build of the Type 31 class at Rosyth, where HMS Venturer is being fitted out and work continues on subsequent ships.

31 COMMENTS

  1. “ describing the results as a major step forward in the £2 billion programme”

    That is inflation for you….if started as a £1.25Bn program then became £1.75Bn….£400m per ship is at least realistic if it has Mk41 etc.

    • No.Type 31 had a 2 billion budget from the start. 1.25 billion was for the shipyard to build the ships. The balance pays for all the other expense (including GFX) getting the ships into service and supported for the first few years.

      The 2 billion has increased, I think it’s now around 2.25 now.

    • Its a repeat of the inflation of frigates and the suchlike in the 70’s. Sad but with Net Zero and the Ukraine war hitting our energy costs to make them the highest in the industrial world is anyone surprised? Whether there is anything worth defending in the UK exists in 10 years time remains to be seen.

      • There is a reason that Sweden, Norway and Denmark are shopping in the UK.

        When I lived in northern Sweden, near Malmo, the

        Swedes shopped in Germany;
        Danes shopped in Sweden;
        Norway’s shops anywhere but Norway!

        The price differentials are extraordinary!

        UK will look affordable!

  2. Do we know yet what the initial weapons fit of HMS Venturer is going to be ? Is it still 12 CAAM launchers? , Is NSM being fitted before commissioning?

  3. Looking at the latest pics of this ship, she looks terrible, all the panels look dented and all the sides show long lines, reminds me of a nackered T23.
    But I’m sure they are fine.

  4. A couple of years ago the Defence Select Committee asked an admiral when will the Type 32 come out of concept? The answer was, we are waiting to see how the new CMS of the Type 31 works. A pretty surprising response in my opinion, how does the CMS dictate the concept? However, it’s time the Defence Select Committee asked the question again. What does the Navy want from a Type 32?

    Might it be that they don’t want it to ever come out of Concept as awkward questions would be asked, like “what now?” Might someone have to make a decision?

      • It doesn’t cost much money to report what you want. Less than leaving it hanging. If there’s no money, make a decision not to buy it.

    • The MRSS is a bigger priority for them and they can’t the get the budget for both. The navy seems to really want 6 MRSS and it seems the are willing to cancel the T32 and move some of the frigate jobs on tot he MRSS like Fire support and even secondary air defence.

      Personally I think it’s a mistake, two or three MRSS would be plenty especially if they are 30,000(t) and the navy can tap on some more T31/32 to get the escort fleet back in to the 20’s.

      • As we went over before, in another thread, the best solution would be for T32 to be AAW land attack focussed.

        I get the idea that T31 needs to work before ordering more. This is the software validation. The timing is interestingly before the equipment shipping list is published.

        The idea of having six GATOR sized platforms is too much concentrated on a single platform.

        Nobody has explained the drivers for this loopy design.

        • Exactly; what are the six ‘gator’ sized MRSS for? Are they going to be global singletons, pootling around policing the world? Are they a second attempt at the original T26 ‘global combat ship’ ? Or just the missing piece of the CSG jigsaw?

          • Radakin did actually state that The Aircraft Carrier Alliance should have gone on to build LPH’s.

            So maybe that is a clue?

            • Maybe, but the reported outline requirements and ‘informed’ concepts from Navantia do point to a LPD. Mk41 VLS seems like a must have feature, for AAW self defence and strike. Actually, I do wonder if the thinking wasn’t influenced by Argus, which was selected for upgrade to littoral support / strike – 28,000 tons, 175m, 3 helo spots, hangar deck for up to 9 Merlins + containerised accomodation. Maybe they just thought, you know what, what we need is Argus with a well deck and frigate armament.

          • I think if we don’t know the what or whether of the Type 32 it will affect the design of the MRSS. No Type 32 (or T31B2) means MRSS will try to do too much, which will make them more costly and slower to build and us ending up with fewer.

            • A fair point to make, but the mood music does seem to point to navy having decided in favour of 6 large LPD – frigate hybrids rather than the current littoral response groups. The RN / RFA have done a lot of amphibious exercises in Australia with a combination of Lyme Bay and Argus. Both these will be replaced. What’s the cost of a 28,000 ton LPD versus a 17,000 LSD, which would also need a frigate escort? How do the crew numbers and running costs compare with a 2 ship alternative? I’ll bet all this has been factored in to the decision and it wouldn’t surprise me if 3 fewer frigates and 6 large ‘hybrid’ frigate armed LPDs was the optimum cost/ capability solution.

        • Interesting. Why not? Better to have 3 more T31’s than Rivers any day. Especially if they can be given loyal ASW drones. ‘We want 8 and we wont wait!’

          • If the navy are settled on commercial ships like RFA Sterling Castle for the MCM mothership role, then the maybe the option opens up for a small batch of high end T31 AAW ships, similar to those mooted for the Danes?

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