UK SIC 2007 code in Section M: Professional, scientific and technical activities

74901 Environmental consulting activities

SIC 74901 is the UK code for environmental consulting activities, part of the class "other professional, scientific and technical activities nec". Companies House accepts it when you register a company or file a confirmation statement.

Code
74901 (UK SIC 2007, Companies House list)
Section
Section M: Professional, scientific and technical activities
Division
74 Other professional, scientific and technical activities
SIC 2026
74.91 Patent brokering and marketing service activities (1:3); 74.99 All other professional, scientific and technical activities n.e.c. (1:3); 80.09 Security activities n.e.c. (1:3)
Closest US NAICS
541614, 541618, 541620, 541690 and 3 more

Activities ONS lists under 74901

The ONS index assigns these 3 activities to this code. If one describes your company, this is the code to use.

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 (74.90) to:

SIC 2026 codeHeadingLink type
74.91Patent brokering and marketing service activities1:3
74.99All other professional, scientific and technical activities n.e.c.1:3
80.09Security activities n.e.c.1:3

"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 74901 until it announces a switch.

Source: ONS correspondence table, SIC 2007 to SIC 2026.

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.