Transmission of electricity (SIC code 35120)
Transmission of electricity is UK SIC code 35120. It sits in division 35 (Electricity, gas, steam and air conditioning supply) of the SIC 2007 list. On the August 2026 Companies House register, 771 active UK companies list 35120 among their SIC codes. 432 of them list it first.
771active UK companies list SIC 35120 among their codes on the public recordCompanies House · counts as of August 2026
SIC 35120 in numbers
771 companies is 0.01 per cent of the 5,190,464 active companies on the UK register. 35120 is the 5th most used of the 6 codes we track in division 35.
Only 432 of the 771 put it first. The other 339, 44 per cent, list it behind another code, so a search on the first code alone would miss most of them. Match any of the four positions and tighten it with a second filter.
ACTIVE COMPANIES BY REGISTERED-OFFICE POST TOWN (WHERE THE PAPERWORK SITS, NOT NECESSARILY THE WORK) · COMPANIES HOUSE PUBLIC RECORD, AUGUST 2026
The five busiest post towns hold 47 per cent of them and London alone 26 per cent. Selling nationally, those towns are most of the market. Selling locally outside them, expect a small pool, so cover a county or a region rather than one town.
A worked example: 35120, registered office in London, incorporated in the last ninety days, from a pool of 771. 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 35120 companies, as leads
Live rows from the enriched public record. Email addresses are withheld until you sign up. Phone numbers come with paid plans.
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On paper this is the utilities sector. On the UK register it is mostly energy project vehicles.
Related SIC codes
How to read SIC 35120
SIC 35120 reads as division 35 (electricity, gas, steam and air conditioning supply), group 351, class 3512, then the full five digits, inside section D, electricity, gas, steam and air conditioning supply. A company picks its own codes, up to four, and Companies House does not check them, so 35120 is the company's own description of what it does, and 432 list it first where 771 list it anywhere.
Who sells into division 35
So many entries are single-asset vehicles that professional services dominate the selling. Accountants and company secretarial providers run portfolios of these vehicles.
About SIC 35120
How many UK companies use SIC code 35120?
771 active UK companies list 35120 (Transmission of electricity) among their registered SIC codes. Each company may register up to four. Of those, 432 put it first. The figures come from the August 2026 Companies House register snapshot, and count active companies only.
Which SIC code should a company set up to own a solar installation use?
Use 35110, production of electricity. It is the standard for generation assets of any type, including solar, wind, hydro and battery-backed generation. Companies that buy and resell power, rather than generate it, fit 35140. Developers sometimes add a construction or project development code during the build. The company chooses freely, and can revise codes on each confirmation statement as the project moves from build to operation.
Find UK SIC 35120 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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