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Construction · London

Construction companies in London

There are 85,349 construction companies registered in London, spread across 330 postcode areas. Here is what they do, where they cluster, and how to get the full list.

Built from the Companies House register · Data updated monthly · companymap.co.uk

85,349construction companies
63,814currently active (75%)
330postcode areas covered
EC1V densest area (4,372 firms)

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What they do — by trade

The trade mix across London's 85,349 registered construction companies, by primary SIC activity:

Development of building projects24,809
Construction of domestic buildings19,974
Other specialised construction activities10,999
Other building completion and finishing10,820
Construction of commercial buildings10,479
Electrical installation6,433
Plumbing, heat and air-conditioning installation6,395
Other construction installation6,072
Painting3,859
Construction of other civil engineering projects2,240

Where they cluster — by postcode area

Registered offices by outcode — the densest is EC1V with 4,372 firms:

EC1V4,372 WC2H4,298 EC2A4,109 N13,256 W1W2,337 E171,960 E61,605 NW91,447 E141,412 NW101,400

When they were founded

Company formations in the sector, by year (full calendar years):

4,8892020
4,7872021
5,3102022
6,9932023
11,3872024
11,5292025

A sample of the companies

A handful of the active construction companies registered across London's postcodes:

CompanyArea
Kaivaro Projects LtdW1S
F&F General Builder LtdSW11
Clapham Roofing Contractors LtdEC1V
Jculshaw Builders LtdEC2A
Jpam Plumbing Solution LtdW13
Xsula Construction LtdE17
Gracechurch Developments LtdSW1W
Kivo Construction LtdNW9
Abtheplumber LtdEC2A
Rsb Property Development LtdEC2A
J&J Property Works LtdSE3
Build London Capital LtdSW8

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Each row includes the company name, number, status, incorporation date, full registered address, postcode, SIC codes and a direct link to its Companies House record.

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Quick answers

How many construction companies are there in London?

There are 85,349 construction companies with a registered office in London on the Companies House register, of which 63,814 (75%) are currently active.

Which part of London has the most construction companies?

The EC1V postcode area has the highest concentration, with 4,372 of London's construction companies registered there.

How many new construction companies were started in London in 2025?

11,529 new construction companies were incorporated in London during 2025, the most recent complete year on the register.

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