Manufacture of doors and windows of metal (SIC code 25120)
Manufacture of doors and windows of metal is UK SIC code 25120. It sits in division 25 (Manufacture of fabricated metal products, except machinery and equipment) of the SIC 2007 list. On the August 2026 Companies House register, 1,663 active UK companies list 25120 among their SIC codes. 1,482 of them list it first.
1,663active UK companies list SIC 25120 among their codes on the public recordCompanies House · counts as of August 2026
SIC 25120 in numbers
1,663 companies is 0.03 per cent of the 5,190,464 active companies on the UK register. 25120 is the 4th most used of the 6 codes we track in division 25.
1,482 of the 1,663 put 25120 first, and only 181 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 10 per cent and the top five post towns hold 18 per cent, so the other 82 per cent sit across the rest of the country. A regional filter narrows the list without gutting it.
A worked example: 25120, registered office in London, incorporated in the last ninety days, from a pool of 1,663. 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 25120 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 25120
SIC 25120 reads as division 25 (manufacture of fabricated metal products, except machinery and equipment), group 251, class 2512, 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 25120 is the company's own description of what it does, and 1,482 list it first where 1,663 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 25120
How many UK companies use SIC code 25120?
1,663 active UK companies list 25120 (Manufacture of doors and windows of metal) among their registered SIC codes. Each company may register up to four. Of those, 1,482 put it first. The figures come from the August 2026 Companies House register snapshot, and count active companies only.
Should an engineering workshop register under 25620 machining or a division 28 machinery code?
Ask what leaves the building. If you machine components, 25620 is right, whether the parts go to aerospace, automotive or general industry. Customers may call you an engineering firm anyway. Division 28 is for companies whose finished product is a machine. Subcontract shops nearly always belong in 25. If you are unsure, list the code that matches most of your revenue. You can change it later on a confirmation statement.
Find UK SIC 25120 companies
Filter Companies House by this code. Each lead arrives with a working website and a real email, or you pay nothing. 100 free leads, no card.
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