UK SIC 2007 code in Section F: Construction
42910 Construction of water projects
SIC 42910 is the UK code for construction of water projects. Companies House accepts it when you register a company or file a confirmation statement.
- Code
- 42910 (UK SIC 2007, Companies House list)
- Section
- Section F: Construction
- Division
- 42 Civil engineering
- SIC 2026
- 42.91 Construction of water projects (1:1)
- Closest US NAICS
- 236210, 236220, 237120, 237210
Activities ONS lists under 42910
The ONS index assigns these 17 activities to this code. If one describes your company, this is the code to use.
- Aqueduct construction
- Coastal defence construction
- Dam construction
- Dredging contractor
- Dredging for water projects
- Dredging of waterways
- Dry dock construction
- Dyke construction
- Dykes and static barrages construction
- Floodgates, movable barrages and hydro-mechanical structures construction
- Harbour construction
- Lock construction
- Marina construction
- Pleasure port construction
- River work construction
- Water project construction
- Waterway construction
Source: ONS UK SIC 2007 alphabetical index.
What changes in SIC 2026
ONS published UK SIC 2026 in 2026. Its correspondence table maps this code's class (42.91) to:
| SIC 2026 code | Heading | Link type |
|---|---|---|
| 42.91 | Construction of water projects | 1:1 |
"1:1" means the class carries over unchanged in scope; other link types mean it was split or merged. Companies House still uses SIC 2007, so keep filing with 42910 until it announces a switch.
Closest US NAICS codes
Matched through the shared international class (ISIC Rev. 4). Treat these as a starting point and read the definition before using one.
Similar codes to compare
Data last changed November 14, 2026. Source: Companies House condensed SIC list. How this page is built.