Why Welders Are Holding Up Britain's Shipbuilding Boom

Britain's shipyards have more work than they've had in years, with new frigates, submarine builds, carrier refits and a steady stream of repair and fit-out contracts all stacking up at once. Getting the orders hasn't been the hard part. Finding someone qualified to weld them together has.

The ECITB Workforce Census 2024, published in January 2025, recorded just 1,155 welders working across the UK's engineering construction sector, with only 122 apprentices or trainees coming up behind them. For an industry trying to build submarines that take a decade to deliver, that's not a comfortable ratio.

Most coverage of UK manufacturing skills talks in broad terms: thousands of vacancies, a workforce ageing out faster than it's being replaced. The welding-specific figures are more precise, and more worrying. Almost a third of platers in engineering construction, 30.5%, are already over 60, and welders sit among the hardest roles in the sector to fill, accounting for 4% of all unfilled vacancies on their own. Seventy-one per cent of employers surveyed by ECITB reported hiring difficulties in 2024, up from 53% in 2021, and 55% named a lack of qualified, skilled candidates as one of the key reasons, up from 47% in 2021.

ECITB's own response, announced in April 2026, includes a six-week upskilling programme in multi-position fillet welding plus new training-bay investment at colleges near Grimsby, in Aberdeen and in central Scotland, on the basis that demand for welders across engineering construction is projected to grow by roughly 47% by 2030.

What "Coded" Actually Means

Being "coded" matters more here than the phrase suggests. A coded welder has passed a test proving they can produce a weld to a specific standard, on a specific material, using a specific process, and the code has to be renewed roughly every six months to stay valid. It isn't a general qualification that transfers neatly between jobs. A welder coded for structural steel on a hull isn't automatically coded for high-pressure pipework, and a yard can't simply borrow someone else's certificate to cover a gap. That's part of why the shortage bites harder than a straightforward headcount problem would.

The Defence Industrial Strategy, published in September 2025, sets aside £182 million for the defence skills pipeline and funds five new Defence Technical Excellence Colleges, which will train submarine engineers and specialist welders among their priority roles, alongside a £10 billion frigate deal with Norway expected to support around 4,000 British jobs on its own. None of that spending helps a yard that needs a coded pipefitter next month rather than in three years' time. A vessel in for repair rarely gets the luxury of a long lead time either. A hull that's failed an inspection or a system that's gone down mid-charter needs the right trades on site within weeks, not once a training programme graduates its next intake, and that urgency is exactly why repair and fit-out work often ends up more exposed to the shortage than a new-build schedule with years of planning behind it.

Becoming a coded welder isn't quick under the best circumstances. The standard route runs through a multi-year apprenticeship before anyone sits the tests that earn them a "ticket," a code covering a specific process and material that has to be renewed roughly every six months to stay valid.

A college can only run so many welding bays at once, and an apprentice can't be rushed through a process designed to make sure the joint on a submarine's hull actually holds. That mismatch between demand and training speed is starting to show up in the wider labour market data, too. The August 2026 KPMG and REC UK Report on Jobs recorded temporary vacancies rising fastest in Blue Collar and Engineering roles, the first increase of its kind in two years, while permanent placements only stabilised in July after a 45-month decline across the wider market.

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High integrity pipe welders, where the job requires 3 or more years' related on-the-job experience.

UK IMMIGRATION SALARY LIST

There's a telling detail buried in the UK's immigration rules. The Immigration Salary List sets out which occupations qualify for a reduced salary threshold when a UK employer sponsors someone on a Skilled Worker visa, and welding trades appear on it, but only in a very specific form: "high integrity pipe welders, where the job requires 3 or more years' related on-the-job experience." Not welders generally. Not fabricators. Specifically the people qualified to weld pipework to the standard needed on ships, pressure systems and offshore installations.

The government doesn't add occupations to that list lightly, and having pipe welders on it at all is a fairly blunt admission that the domestic pipeline isn't producing enough of them. The listing is due to lapse on 31 December 2026 unless it's renewed, which is worth watching closely if international recruitment is part of how you're planning to fill these roles.

Employers chasing the same narrow pool of welders, pipefitters and marine electricians for shipyard welding jobs, ship repair contracts or dockyard fit-out work won't solve the problem by simply raising the salary on a job advert. The people qualified to fill those roles already know their value. What tends to work better is treating international recruitment as a planned part of the pipeline rather than an emergency measure, particularly for roles like high-integrity pipe welding where the visa rules already recognise the shortage.

We see this repeatedly through our own marine engineering recruitment work: employers who start an international search before a contract deadline is looming tend to end up with better candidates and considerably less panic than those who only look abroad once the local shortlist has dried up, and it's why we increasingly see international recruitment built into shipyard staffing plans from the outset, rather than bolted on as an afterthought.

The yards with the smoothest few years ahead probably won't be the ones that won the biggest contracts. They'll be the ones that worked out early that the bottleneck was never really headcount. It was always going to be welders, and there still aren't enough of them.