UK SIC 2007 code in Section M: Professional, scientific and technical activities
71122 Engineering related scientific and technical consulting activities
SIC 71122 is the UK code for engineering related scientific and technical consulting activities, part of the class "engineering activities and related technical consultancy". Companies House accepts it when you register a company or file a confirmation statement.
- Code
- 71122 (UK SIC 2007, Companies House list)
- Section
- Section M: Professional, scientific and technical activities
- Division
- 71 Architectural and engineering activities; technical testing and analysis
- SIC 2026
- 71.12 Engineering activities and related technical consultancy (1:1)
- Closest US NAICS
- 541310, 541320, 541330, 541340 and 3 more
Activities ONS lists under 71122
The ONS index assigns these 38 activities to this code. If one describes your company, this is the code to use.
- Aerial photography for cartographic and spatial activity purposes
- Aerial survey
- Borehole surveying
- Boundary surveying activities
- Cartographic and spatial information activities
- Chartered land surveyor
- Crude oil exploration
- Data collection via drones
- Digital mapping activities
- Dimensional survey activities
- Exploration for gas or oil
- Fire and explosion protection and control consultancy activities
- Geodetic surveying activities
- Geological and prospecting activities
- Geological surveying for petroleum or natural gas (not geological consultancy)
- Geologist (consultant)
- Geophysical consultancy activities (engineering related)
- Geophysical, geologic and seismic surveying
- Health and safety and other hazard protection and control consultancy activities
- Hydrographic surveying activities
- Hydrologic surveying activities
- Land surveying activities
- Land surveyor (not valuer)
- Magnetometric (subsurface ) surveying activities
- Micropalaeontogical analysis activities
- Mineral surveyor
- Natural gas exploration
- Navigation map revising
- Petroleum exploration
- Petroleum geologist
- Petrophysical interpretation activities
- Seismic surveying for petroleum
- Sewage treatment consultancy activities
- Sub-surface surveying activities
- Surveying activities (industrial and engineering)
- Surveyor (other than valuer)
- Telecommunications consultancy activities
- Water divining and other scientific prospecting activities
Source: ONS UK SIC 2007 alphabetical index.
Businesses that use this code
What changes in SIC 2026
ONS published UK SIC 2026 in 2026. Its correspondence table maps this code's class (71.12) to:
| SIC 2026 code | Heading | Link type |
|---|---|---|
| 71.12 | Engineering activities and related technical consultancy | 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 71122 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.