Machining (SIC code 25620)
Precision machining firms file here. Think CNC milling, turning, EDM and contract manufacturing of metal components. The old Sheffield steel trade and the AMRC next door keep this code tightly clustered in one part of the country.
2,924active UK companies list SIC 25620 among their codes on the public recordCompanies House · counts as of August 2026
SIC 25620 in numbers
2,924 companies is 0.06 per cent of the 5,190,464 active companies on the UK register. 25620 is the third most used of the 6 codes we track in division 25.
2,609 of the 2,924 put 25620 first, and only 315 carry it as a second, third or fourth code. The code on its own is a clean filter.
ACTIVE COMPANIES BY REGISTERED-OFFICE POST TOWN (WHERE THE PAPERWORK SITS, NOT NECESSARILY THE WORK) · COMPANIES HOUSE PUBLIC RECORD, AUGUST 2026
London is the largest cluster at 4 per cent and the top five post towns hold 9 per cent, so the other 91 per cent sit across the rest of the country. A regional filter narrows the list without gutting it.
A worked example: 25620, registered office in London, incorporated in the last ninety days, from a pool of 2,924. Each lead you get arrives with a working website and a real email, and the director's name when the record has one. If we cannot complete one, you pay nothing.
SIC 25620 companies, as leads
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This is the UK's metalworking division. The biggest group sits under 25990, the catch-all for fabricated metal products.
Related SIC codes
How to read SIC 25620
SIC 25620 reads as division 25 (manufacture of fabricated metal products, except machinery and equipment), group 256, class 2562, then the full five digits, inside section C, manufacturing. A company picks its own codes, up to four, and Companies House does not check them, so 25620 is the company's own description of what it does, and 2,609 list it first where 2,924 list it anywhere.
Who sells into division 25
The skills shortage decides who sells into this division. Engineering recruiters mine it for firms that will need welders, fabricators and machinists.
About SIC 25620
Where do most SIC 25620 firms cluster?
Three places do most of it. West and South Yorkshire around Sheffield, the West Midlands around Birmingham, and the North West engineering corridor. The S, B and M postcodes dominate.
Are aerospace machinists filed under SIC 25620?
Yes. UK aerospace machinists file 25620, unless the work counts as aerospace component manufacturing (30300). Many firms file both codes.
Put SIC 25620 to work
Find UK SIC 25620 companies
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