Sewerage (SIC code 37000)
Sewerage is UK SIC code 37000. It sits in division 37 (Sewerage) of the SIC 2007 list. On the August 2026 Companies House register, 1,458 active UK companies list 37000 among their SIC codes. 1,337 of them list it first.
1,458active UK companies list SIC 37000 among their codes on the public recordCompanies House · counts as of August 2026
SIC 37000 in numbers
1,458 companies is 0.03 per cent of the 5,190,464 active companies on the UK register. It is the only code we track in division 37.
1,337 of the 1,458 put 37000 first, and only 121 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 9 per cent and the top five post towns hold 13 per cent, so the other 87 per cent sit across the rest of the country. A regional filter narrows the list without gutting it.
A worked example: 37000, registered office in London, incorporated in the last ninety days, from a pool of 1,458. 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 37000 companies, as leads
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Division 37: Sewerage
Also a single code, 37000, and it holds two quite different populations. One is the corporate structure around wastewater utilities, mirroring division 36.
How to read SIC 37000
SIC 37000 reads as division 37 (sewerage), group 370, class 3700, then the full five digits, inside section E, water supply, sewerage and waste management. A company picks its own codes, up to four, and Companies House does not check them, so 37000 is the company's own description of what it does, and 1,337 list it first where 1,458 list it anywhere.
Who sells into division 37
Tanker and jetting equipment suppliers, CCTV drainage survey kit, waste carrier licensing services and specialist insurers all sell into this division.
About SIC 37000
How many UK companies use SIC code 37000?
1,458 active UK companies list 37000 (Sewerage) among their registered SIC codes. Each company may register up to four. Of those, 1,337 put it first. The figures come from the August 2026 Companies House register snapshot, and count active companies only.
Is a drain unblocking business really in the same code as a water utility?
Yes, and it is one of the widest ranges any single SIC code covers. 37000 spans everything from a regional wastewater operator to a one-van drainage firm. Company size is the only practical way to tell them apart, so filter on it before you write to anyone.
Find UK SIC 37000 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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