UK SIC 2007 · 25620
Machining
UK precision machining, CNC milling, turning, EDM, and contract manufacturing of metal components. The Sheffield steel legacy + AMRC adjacency give it strong geographical concentration.
As of the July 2026 Companies House register, 2,916 active UK companies list 25620 among their SIC codes (2,602 as their first code).
Companies House data refreshed daily. Page reviewed July 2026.
Division 25: Manufacture of fabricated metal products, except machinery and equipment
This is the UK's metalworking division. The largest group of companies registers under 25990, the catch-all for fabricated metal products, followed by 25110 for structural steelwork firms making frames, balconies and architectural metalwork, and 25620 for precision machining businesses running CNC mills and lathes. Between them these codes cover most general fabricators, welders with premises and subcontract engineering shops. The division excludes machinery itself, which belongs in 28, a distinction that trips up plenty of engineering companies at registration.
The skills shortage shapes who prospects this division: engineering recruiters mine it for firms likely to need welders, fabricators and machinists, treating headcount growth and new contract wins as their trigger. Steel stockholders, consumables suppliers, machine tool dealers and calibration services work the same lists. Structural steel firms under 25110 attract construction-adjacent sellers, from estimating software to CE marking consultancies. Newly incorporated fabricators usually come from the tools, having left employment with a customer or two already lined up, and need insurance, kit finance and a basic web presence quickly.
Related SIC codes
25500, Forging, pressing, stamping and roll-forming of metal25610, Treatment and coating of metals28490, Manufacture of other machine toolsWhere SIC 25620 clusters in the UK
About SIC 25620
Where do most SIC 25620 firms cluster?
West Yorkshire + South Yorkshire (Sheffield), West Midlands (Birmingham), and the North West engineering corridor. Postcodes S, B, and M dominate.
Are aerospace machinists filed under SIC 25620?
Yes, UK aerospace machinists file 25620 unless their work specifically falls under aerospace component manufacturing (30300). Many file both.
Find UK SIC 25620 companies
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