Great British Energy – Nuclear says its small modular reactor programme at Wylfa has now awarded nearly GBP900 million of contracts since 2023, with more than 70% going to UK-registered companies.
For small manufacturers, engineering firms, specialist contractors and professional services businesses, the important point is not only the size of the number. It is the signal that a long procurement cycle is moving from policy ambition into a supply-chain build-out, with billions more still expected to be bought for the Anglesey project.
The Wylfa programme is planned around three small modular reactors, delivered with Rolls-Royce SMR, and the government says the first project is expected to support around 3,000 jobs on site at peak construction. The wider opportunity for SMEs will sit in the layers beneath the headline contracts: fabrication, electrical work, civil engineering, testing, logistics, safety systems, training, facilities, security, environmental services and the many professional services that large infrastructure projects need.
Why this matters for SMEs
Large public and energy projects can feel remote from smaller firms, especially when the main awards go to major contractors. But those prime contracts often create demand further down the chain, and the stated target for UK content gives domestic suppliers a reason to track the programme closely.
That does not mean every small firm should rush to chase nuclear work. The sector has demanding standards, long sales cycles and heavy documentation requirements. Businesses may need accreditations, quality systems, cyber controls, insurance checks and a clear record of delivery before they can get near a buyer. For some firms, the realistic first step may be subcontracting, joining local supplier events, or strengthening processes so they are ready when tier-one contractors open opportunities.
The strongest fit is likely to be for firms already serving regulated, safety-critical or infrastructure-heavy customers. Engineering workshops, precision manufacturers, specialist construction suppliers, environmental consultants, workforce training providers and site services companies may all find that the Wylfa programme creates openings beyond the nuclear sector itself.
What to check before bidding
SMEs interested in the work should start with the practical basics. Check which procurement portals and supplier networks are being used by Great British Energy – Nuclear, Rolls-Royce SMR and their major partners. Look for supplier days, framework notices and early market engagement rather than waiting for fully formed tenders.
It is also worth reviewing whether your business can evidence the things large buyers usually ask for: audited or well-kept accounts, health and safety policies, data security, environmental policies, modern slavery statements where relevant, and a clear quality management process. For firms that already work in defence or major infrastructure, that evidence may be close to hand. For others, it may take time to build.
Cash flow also matters. Infrastructure supply chains can involve staged payments, retention terms and long lead times. Before committing heavily to a tender, SMEs should model the working capital needed to deliver the job, including materials, labour, certification and any delays in payment. Our earlier look at late payments and SME cash flow is relevant here: winning bigger work is only useful if the payment profile is manageable.
The regional angle
Although Wylfa is a Wales project, the supply-chain impact is unlikely to stop at Anglesey. The government announcement points to UK-wide contract spend and jobs across the supply chain. That should make the programme relevant to SMEs in manufacturing clusters, engineering services, construction support and clean-energy supply chains across the country.
There is also a skills question. If the project gathers pace, local employers may see more competition for technicians, project managers, welders, electricians and compliance specialists. Smaller firms near major energy or infrastructure projects should watch recruitment pressure as well as contract opportunities.
For now, the sensible takeaway is to track procurement signals, get supplier paperwork in order, and be realistic about where your business can add value. The headline contract total is large, but the best SME opportunities are likely to go to firms that prepare early, understand the compliance burden and can show they are dependable in a demanding supply chain.
Sources
Source: Great British Energy – Nuclear press release, 24 June 2026.
