Transmission of electricity
812 active UK companies registered under this classification.
SIC Code 35120 (Transmission of electricity) is a UK Standard Industrial Classification code used by Companies House to categorise business activities. Companies registered under this code operate in the Transmission of electricity sector, which falls under Section D (Electricity, Gas, Steam and Air Conditioning Supply) of the SIC 2007 framework. There are currently 812 active companies and 901 total registrations under this classification.
Sector pulse: concentration is strongest in LONDON and ALTRINCHAM, with 15 new incorporations recorded in 2026.
Incorporation Trends
New Transmission of electricity companies registered per year.
Transmission of electricity Companies
Showing 1–25 of 924 companies.
11KVNZ LIMITED 06564288
3 PHASE ENTERPRISE LTD 16864813
3 PHASE SOLUTIONS LIMITED 07710032
400KV SAPS LTD SC712571
A. J. CALEBS INVESTMENTS LIMITED 08103497
A.G.S.S. NI LIMITED NI695991
A.HOLROYD LTD. 11162659
ABENGOA CONCESSIONS INVESTMENTS LIMITED 08818214
ABEREDW ENERGY PARK LIMITED 12904601
ACCELERATE ENERGY HOLDINGS LIMITED NI696160
ACE INSTRUMENTS LTD 16912121
ACLP SOLAR LIMITED 16665026
ACTIVA PROCESS MANAGEMENT GREEN PROJECTS LTD 13051711
ADTEK LIMITED 07951323
AESS (NI) LIMITED NI693695
AGES CAMEROON LTD 10118543
AGHINDAIAGH WIND LIMITED NI612350
AGR NETWORKS LIMITED 15784562
AJAR ENERGY SOLUTIONS LTD 16465775
AK RENEWABLE ENERGY (AKRE) UK LTD 17120763
ALB SOLARS LTD 16217173
ALBION HV SERVICES LIMITED 10297730
ALFANAR ENERGY LIMITED 11520080
ALFIE ELECTRICIAN LTD 11875163
ALPHA GRIMSBY LTD 12040417
Frequently Asked Questions
What is SIC code 35120?
SIC code 35120 represents "Transmission of electricity" in the UK Standard Industrial Classification (SIC) 2007 system. It is used by Companies House to categorise the primary business activity of registered UK companies. It falls under Section D — Electricity, Gas, Steam and Air Conditioning Supply.
How many UK companies are classified under SIC 35120?
There are currently 812 active UK companies registered under SIC code 35120 (Transmission of electricity), out of 901 total registrations.
Where are most Transmission of electricity companies based in the UK?
The top locations for Transmission of electricity companies in the UK are LONDON, ALTRINCHAM, Cardiff, GLASGOW, GREENSIDE PLACE. London typically leads in company registrations across most sectors.
How do I find a specific Transmission of electricity company?
You can browse all companies on this page, or use CompanyPulse's search at companypulse.co.uk/search to find a specific company by name or company number. Each company profile includes directors, financial data, risk analysis, and filing history.
How many new Transmission of electricity companies were incorporated in 2026?
15 new companies were registered under SIC code 35120 in 2026. CompanyPulse tracks all new UK incorporations in real time via the Companies House data stream.