230 active UK companies are classified under general construction of buildings and civil engineering works (SIC code 4521), a specialised sector. This sector falls under Section F — Construction — of the UK Standard Industrial Classification. The sector has a relatively low 6.8% dissolution rate — 230 of 1,642 registrations remain active. This is a mature sector with limited new entrants — only 0% of companies were incorporated since 2020. 485% of active companies were formed before 2000, reflecting the sector's deep roots in the UK economy. The average company in this sector is 52.1 years old, suggesting established and stable operators. London leads with 5% of companies in this sector. The sector's longest-standing company was incorporated in 1903.
Source: Companies House register via UVAGATRON, October 2026
A mature, established sector with companies averaging 52.1 years.
The general construction of buildings and civil engineering works sector has a <Link href="/glossary/company-dissolution">6.8% dissolution rate</Link>. The average active company in this sector is 52.1 years old. Geographic concentration: 5% in LONDON.
There are 230 active companies classified under SIC code 4521 (General construction of buildings and civil engineering works) in the UK, out of 1,642 total registered.
SIC code 4521 stands for "General construction of buildings and civil engineering works". It belongs to Section F — Construction of the UK Standard Industrial Classification.
The largest concentrations are in LONDON (12), GLASGOW (8), MANCHESTER (7).
The average active general construction of buildings and civil engineering works company in the UK is 52.1 years old, with the oldest registration dating back to 1903.
Our database contains 1,834 data signals across 7 categories for active general construction of buildings and civil engineering works companies. The largest category is Governance with 890 signals from 5 government sources.
5.9M companies, 50M+ signals from 53 government sources. Risk scores, director networks, entity analysis.