46,835 active companies in the UK are classified under other specialised construction activities n.e.c. (SIC code 43999). This sector falls under Section F — Construction — of the UK Standard Industrial Classification. The sector has a relatively low 9.8% dissolution rate — 46,835 of 59,709 registrations remain active. The sector is experiencing rapid growth, with 121.8% of active businesses incorporated since 2020 — indicating strong recent demand. 105% of companies were formed after 2010, marking this as a sector with predominantly recent entrants. The average company age in this sector is 9.8 years. 520 large companies, 108 medium-sized firms operate in this sector. London leads with 12% of companies in this sector. Companies in this sector hold 3,777 government contracts valued at £11.6B. The sector's longest-standing company was incorporated in 1893.
Source: Companies House register via UVAGATRON, October 2026
A rapidly growing sector with 121.8% of active companies formed since 2020.
The other specialised construction activities n.e.c. sector has a <Link href="/glossary/company-dissolution">9.8% dissolution rate</Link>. The average active company in this sector is 9.8 years old. Geographic concentration: 12% in LONDON.
Companies in the other specialised construction activities n.e.c. sector have been awarded 3,777 government contracts worth £11587.7M in total.
There are 46,835 active companies classified under SIC code 43999 (Other specialised construction activities n.e.c.) in the UK, out of 59,709 total registered.
SIC code 43999 stands for "Other specialised construction activities n.e.c.". It belongs to Section F — Construction of the UK Standard Industrial Classification.
The largest concentrations are in LONDON (5,493), GLASGOW (660), MANCHESTER (581).
The average active other specialised construction activities n.e.c. company in the UK is 9.8 years old, with the oldest registration dating back to 1893.
Our database contains 413,364 data signals across 12 categories for active other specialised construction activities n.e.c. companies. The largest category is Governance with 197,277 signals from 6 government sources.
5.9M companies, 50M+ signals from 53 government sources. Risk scores, director networks, entity analysis.