Britain isn't simply running out of welders. It's running out of a specific kind: coded, site-ready welders who can work to nuclear and defence standards. Industry bodies put the wider shortfall above 35,000 by 2027, but on licensed sites the squeeze is sharper and much harder to fix.
Key Takeaways
- Industry bodies estimate the UK will be short of more than 35,000 skilled welders by 2027, with a narrower CITB estimate of around 18,000.
- The real scarcity is coded welders, certified in TIG and MMA to standards such as ASME IX, not welders in general.
- The average UK welder is now over 55, and around half are expected to retire by 2027.
- Only 231 trainee welders graduated in 2024, against 622 international welder visas issued the same year.
- Nuclear new build and defence shipbuilding are chasing the same small pool of certified welders, which is pushing premium day rates higher.
What the welder shortage actually looks like
Is there really a welder shortage in the UK?
It depends what you count. In raw numbers, welding vacancy postings actually peaked in 2023 and eased through 2024 and 2025, so the country isn't uniformly out of welders. The structural shortage sits in a narrower band: coded welders certified to nuclear and defence standards who are cleared, willing and available to work on those sites.
The headline numbers still tell a clear story. WorldSkills UK estimates a shortfall above 35,000 skilled welders by 2027, while the CITB puts the construction figure closer to 18,000 on a narrower measure, so the exact total depends on the source. What isn't disputed is the demographic pressure feeding it, which is the same generational squeeze driving the wider war for talent in engineering and manufacturing.
The pipeline isn't refilling the top of the trade. The average UK welder is now over 55, and around half are expected to retire by 2027, yet only 231 trainee welders graduated in 2024 against 622 international welder visas issued the same year. The country is qualifying far fewer welders than it's losing, even before you add the coding requirement on top.
Why is the coded welder pool so small?
Coding is a certification earned per process and per material, proven with test pieces and verified against a standard such as ASME IX. It isn't a one-off badge; it lapses without continuous work, so a welder has to keep welding to that code to stay current. That single requirement keeps the qualified pool small and self-limiting by design.
Then the filters stack up. Nuclear and defence sites add security clearance, site inductions and a candidate's willingness to work in that environment, each of which trims the pool again. It's why so much of this hiring runs through specialists: recruitment agencies placed 68% of welding-trade vacancies between 2021 and 2025, because employers can't reach certified, available welders through a job board alone.
Where the demand concentrates
Which projects are driving welder and pipefitter demand?
Two programmes dominate: nuclear new build and defence shipbuilding. Hinkley Point C and Sizewell C need enormous volumes of coded pipework, while defence hiring pulls hard on the Type 26 and Type 31 frigate programmes and the submarine build at Barrow. Energy and petrochemical work adds a third, steady stream of demand for the same skills.
Geography concentrates it further. Demand clusters around Cumbria, Sellafield and Barrow, Somerset for Hinkley Point C, Suffolk for Sizewell C, and Teesside, so certified welders in those areas are in short supply and high demand at once. The ECITB names welders among the roles with the highest demand growth to 2030, and that pull is tightly linked to the nuclear new build programme accelerating across the country.
What are coded welders paid in 2026?
Pay tracks certification and site-readiness, not just years served. Trained apprentice welders start around £30,000 and can rise past £50,000 with experience, while nuclear-coded TIG and MMA welders command premium day rates on major projects. Hinkley Point C has advertised those premium rates and still found the roles hard to fill, which tells you where the real bottleneck sits.
That's the market clearing on scarcity. A certified, cleared welder who can pass a test piece on day one is worth a premium to a programme running against a schedule, because the alternative is a stalled section of pipework. Certification, currency and clearance set the rate far more than headline experience does.
How Scantec supplies coded welders to nuclear and defence sites
Our trades desk works the narrow, certified end of this market, the part that generalist hiring can't reach. Sourcing a coded welder isn't a keyword search; it's verifying that the right qualifications are current and the candidate can actually get on site.
- We verify coding and test-piece currency. We confirm the exact codes, processes and materials a candidate holds, and whether they're current, before anyone reaches your project.
- We check clearance and site-readiness first. We establish security clearance status and induction history early, because on nuclear and defence sites that decides who can start and when.
- We benchmark day rates against live demand. With HPC, Sizewell C and defence yards competing, we advise on rates that secure a certified welder rather than lose one.
- We manage the pipeline through mobilisation. We hold candidates through vetting and notice periods, the point at which trades placements most often fall through.
That discipline is the same one behind how we find quality candidates for nuclear and defence, and it's what separates genuine specialist trades recruitment from a volume agency filling generic vacancies.
Frequently Asked Questions
What is a coded welder?
A coded welder is one certified to weld to a specific standard, such as ASME IX or ISO 9606, for a particular process and material. The certification, or coding, is proven with test pieces and must be kept current through continuous work. Coded welders are the group nuclear and defence sites most struggle to hire.
What is a TIG welder?
TIG, tungsten inert gas welding, is a precise, high-integrity process used for critical joints in nuclear pipework, defence and aerospace. It produces clean, controlled welds suited to safety-critical work, which is why coded TIG welders are in particularly short supply and command premium rates on major nuclear projects.
How do you become a welder in the UK?
Most welders start with a Level 2 or Level 3 welding qualification or an apprenticeship, which takes months rather than years for the basics. Coding tests for specific processes and materials come next, and nuclear or defence work then requires that coding plus security clearance and site inductions before starting.
What do welders do on nuclear sites?
On nuclear sites, coded welders fabricate and join safety-critical pipework and components to strict standards, with every weld inspected and traceable. The work demands certified processes such as TIG and MMA, current coding, and site clearance, because a failed weld on a nuclear system carries consequences no other sector matches.
About the author
Peter Bates founded Scantec in 1990 and still leads the business today, holding to the same values it started with: delivery, integrity, transparency and compliance. Under his direction Scantec has grown into a UK Top 10 technical and engineering recruitment specialist, placing contract and permanent staff across nuclear, oil and gas, power generation, chemical, pharmaceutical and manufacturing. The firm holds ECIA, EIC, REC, FPAL, Achilles UVDB, JIB and ISO 9001 accreditation.
Hiring coded welders and pipefitters in 2026
Scantec's trades team can brief you on the availability of coded welders and pipefitters, clearance timelines and realistic day rates for nuclear, defence and energy sites. Call the desk on 0151 666 8999 or submit a vacancy to get started.
