Rolls Royce Holdings And 2 British Nuclear Stocks To Watch

Oil supply risks and shipping disruptions have put energy security back in the spotlight, and that pulls nuclear power into the conversation for predictable, low carbon electricity that is less exposed to fuel price shocks. For UK investors, that creates a window to look at companies tied to uranium, fuel cycle services, and reactors. This article highlights three nuclear energy stocks from our screener to help focus your research.

The stocks covered below are just a starter pack, and the full screen surfaced 7 more nuclear energy companies with equally compelling stories that are not included here. To identify and analyze your own highest conviction ideas across uranium producers, infrastructure and reactor operators, head straight to the Nuclear Energy Stocks screener.

Rolls-Royce Holdings (LSE:RR.)

Overview: Rolls-Royce Holdings designs and services aero engines, defense propulsion systems, and submarine nuclear power plants, providing mission-critical power solutions worldwide across civil aviation, military platforms, and onsite energy applications while keeping its nuclear submarine work focused within the Defence segment.

Operations: Rolls-Royce generates £11.8b from Civil Aerospace, £5.5b from Power Systems, £5.0b from Defence, and £0.9b from unallocated items.

Market Cap: £113.4b

Rolls-Royce matters for this nuclear energy screen because its submarine propulsion expertise connects advanced reactor technology with long term defense power needs.

"A significant portion of current narrative and valuation appears premised on Power Systems segment growth, particularly the data center power generation boom, continuing at near-peak rates (20%+ per year) as cloud and AI infrastructure expand. If the data center investment cycle were to decelerate from these extraordinary levels, revenue growth and margin gains could slow materially, which could negatively affect future operating profit."

The real test for Rolls-Royce will come if a single key assumption about future demand quietly shifts against those current expectations.

If that key assumption is wrong, the full narrative for Rolls-Royce Holdings illustrates where Rolls-Royce Holdings could still accelerate or stall as demand patterns and capital needs shift.

National Atomic Company Kazatomprom JSC (LSE:KAP)

Overview: National Atomic Company Kazatomprom JSC is a Kazakhstan based uranium producer that supplies reactor fuel and related nuclear materials worldwide.

Operations: Kazatomprom generates about KZT 1.70t from Uranium, KZT 0.29t from Other activities, and KZT 0.09t from Ulba Metallurgical Plant JSC, with eliminations of KZT 0.22t.

Market Cap: US$17.4b

Kazatomprom gives you direct exposure to the nuclear story because its uranium mines, processing plants, and logistics chain feed reactor operators globally.

"Global structural undersupply of uranium driven by increasing nuclear build-outs, plant lifespan extensions, and a lag in bringing new projects online is supporting a multi-year demand upcycle. This is positioning Kazatomprom for sustained pricing power and higher sales volumes, which is described as positive for revenue and margin growth."

What really matters now is how one less visible cost and supply squeeze shapes Kazatomprom’s ability to turn that demand into durable margins.

That pressure point sits at the heart of the full narrative for National Atomic Company Kazatomprom JSC, which maps how supply risks, pricing power and political shifts could reshape Kazatomprom’s next chapter.

Centrica (LSE:CNA)

Overview: Centrica runs an integrated energy business that supplies households and companies, trades power, and generates electricity from nuclear assets.

Operations: Centrica earns about £16.3b from Retail, £6.0b from Optimisation and £1.6b from Infrastructure, partly offset by intra-group items.

Market Cap: £6.7b

Centrica matters for this nuclear energy screen because its nuclear generation feeds low carbon electricity into the UK grid while the wider group stays diversified across retail, trading and infrastructure.

"Centrica's expanding investment in regulated, low-carbon generation assets (notably the Sizewell C nuclear project), combined with opportunities in potential nuclear life extensions and carbon storage (Morecambe Net Zero), is described as positioning the company to capture stable, long-duration, inflation-linked returns amid accelerating decarbonization policies, supporting predictable revenue and enhanced margins over the long term."

What could really move the dial for Centrica now is how one future regulatory decision shapes the value of its nuclear-heavy pipeline.

That decision point is exactly where the full narrative for Centrica pulls the story together, spotlighting how Centrica could turn policy shifts into accelerating long term cash generation potential.

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.

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