42.11: Construction of roads and motorways (UK SIC Classification 2007)
74.90/9: Other professional, scientific and technical activities (not including environmental consultancy or quantity surveying) n.e.c. (UK SIC Classification 2007)
42.11: Construction of roads and motorways (European Community NACE Rev 2)
4210: Construction of roads and railways (UN ISIC Rev 4)
74.90: Other professional, scientific and technical activities n.e.c. (European Community NACE Rev 2)
7490: Other professional, scientific and technical activities n.e.c. (UN ISIC Rev 4)