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UK Engineering & Precision

Britain’s quiet compounders — flow control, instruments and components.

London is not only banks, miners and oil. A cluster of British engineers sells specialist flow control, precision instruments and industrial components into global markets, often with the high margins and long customer relationships that come from being the only credible supplier. This collection curates them; the defence primes are excluded because they have their own collection.

24 stocksSorted by market capUpdated 7 Oct 2026

Why it matters

Britain’s quiet compounders — flow control, instruments and components. These themes often connect to policy, commodity cycles, infrastructure spending and long investment lead times.

What to check next

Check backlog quality, project execution, input costs, balance-sheet resilience and sensitivity to commodity prices or government budgets.

Main risk

Cyclical demand, cost overruns, regulation and commodity volatility can overwhelm even a strong long-term infrastructure or energy story.

Company Market Market Cap Reward Risk Yield
Halma PLCHLMA£13.6B53450.7%
Diploma PLCDPLM£10.4B68330.8%
Intertek Group PLCITRK£9.0B50491.8%
Smiths Group PLCSMIN£7.9B52341.7%
IMI PLCIMI£7.4B61311.1%
Weir Group PLCWEIR£6.7B52511.6%
Spirax Group plcSPX£5.3B51432.4%
Renishaw PLCRSW£4.3B70301.4%
Rotork PLCROR£4.0B69451.7%
RS GROUP PLCRS1£3.5B56393.0%
Hill & Smith Holdings PLCHILS£2.5B72302.2%
Oxford Instruments PLCOXIG£1.7B52450.8%
Bodycote PLCBOY£1.5B54532.6%
Volution Group plcFAN£1.3B67421.8%
Volex PlcVLX£1.3B66521.0%
Vesuvius PLCVSVS£1.1B46555.2%
Goodwin PLCGDWN£1.1B55562.4%
Elementis PLCELM£998.6M72402.6%
Discoverie Group PLCDSCV£817.1M63561.6%
Morgan Advanced Materials plcMGAM£747.7M57524.6%
Genuit Group plcGEN£715.4M60564.6%
XP Power LtdXPP£571.9M5360—
FW Thorpe PLCTFW£293.6M68322.8%
Judges Scientific PlcJDG£240.5M49553.3%

Frequently asked questions

What is the UK Engineering & Precision collection?

Britain’s quiet compounders — flow control, instruments and components. It currently holds 24 stocks, each rated by Openbook's Reward and Risk scores. London is not only banks, miners and oil.

How are UK Engineering & Precision stocks selected?

UK Engineering & Precision is a curated basket of companies with direct exposure to this theme, screened against live market data and ranked by market capitalisation.

How often is the UK Engineering & Precision list updated?

Prices, ratings and rankings rebuild from live market data every time the page loads. The membership of the basket itself is reviewed and revised by hand on a regular cadence, so newly-listed or no-longer-relevant companies are added and removed as the theme moves.

How should I use the Reward and Risk ratings?

Openbook's Reward rating combines a stock's growth, momentum, profitability and valuation into a single 0–100 score, and the Risk rating scores financial strength, volatility and size. Use them to compare names within this theme — broadly, a higher Reward alongside a lower Risk is more attractive. They are quantitative research signals, not investment advice.

Openbook Reward and Risk ratings and factor scores are quantitative signals for research, not investment advice. Data may be delayed. Some US-listed names carry partial factor coverage.