Businesses involved in the the following industries (as defined by the SIC Codes 2007) can use the ProQuin product as defined in the table below.
| Options |
 |
 |
 |
| 69 Legal and accounting activities |  | | |
| 69.1 Legal activities | | | |
| 69.10 Legal activities | | | |
| 69.10/1 Barristers at law | | | |
| 69.10/2 Solicitors |  | | |
| 69.10/9 Activities of patent and copyright agents; other legal activities (other than those of barristers and solicitors | | | |
| 69.2 Accounting, bookkeeping and auditing activities; tax consultancy | | | |
| 69.20 Accounting, bookkeeping and auditing activities; tax consultancy | | | |
| 69.20/1 Accounting, and auditing activities | | | |
| 69.20/2 Bookkeeping activities | | | |
| 69.20/3 Tax consultancy | | | |
| 70 Activities of head offices; management consultancy activities | | | |
| 70.1 Activities of head offices | | | |
| 70.10 Activities of head offices | | | |
| 70.2 Management consultancy activities | | | |
| 70.21 Public relations and communication activities | | | |
| 70.22 Business and other management consultancy activities | | | |
| 70.22/1 Financial management | | | |
| 70.22/9 Management consultancy activities (other than financial management) | | | |
| 71 Architectural and engineering activities; technical testing and analysis | | | |
| 71.1 Architectural and engineering activities and related technical consultancy | | | |
| 71.11 Architectural activities | | | |
| 71.11/1 Architectural activities | | | |
| 71.11/2 Urban planning and landscape architectural activities | | | |
| 71.12 Engineering activities and related technical consultancy | | | |
| 71.12/1 Engineering design activities for industrial process and production | | | |
| 71.12/2 Engineering related scientific and technical consulting activities | | | |
| 71.12/9 Other engineering activities (not including engineering design for industrial process and production or engineer | | | |
| 71.2 Technical testing and analysis | | | |
| 71.20 Technical testing and analysis | | | |
| 72 Scientific research and development | | | |
| 72.1 Research and experimental development on natural sciences and engineering | | | |
| 72.11 Research and experimental development on biotechnology | | | |
| 72.19 Other research and experimental development on natural sciences and engineering | | | |
| 72.2 Research and experimental development on social sciences and humanities | | | |
| 72.20 Research and experimental development on social sciences and humanities | | | |
| 73 Advertising and market research | | | |
| 73.1 Advertising | | | |
| 73.11 Advertising agencies | | | |
| 73.12 Media representation | | | |
| 73.2 Market research and public opinion polling | | | |
| 73.20 Market research and public opinion polling | | | |
| 74 Other professional, scientific and technical activities | | | |
| 74.1 Specialised design activities | | | |
| 74.10 Specialised design activities | | | |
| 74.2 Photographic activities | | | |
| 74.20 Photographic activities | | | |
| 74.20/1 Portrait photographic activities | | | |
| 74.20/2 Other specialist photography (not including portrait photography) | | | |
| 74.20/3 Film processing | | | |
| 74.20/9 Other photographic activities (not including portrait and other specialist photography and film processing) n.e. | | | |
| 74.3 Translation and interpretation activities | | | |
| 74.30 Translation and interpretation activities | | | |
| 74.9 Other professional, scientific and technical activities n.e.c. | | | |
| 74.90 Other professional, scientific and technical activities n.e.c. | | | |
| 74.90/1 Environmental consulting activities | | | |
| 74.90/2 Quantity surveying activities | | | |
| 74.90/9 Other professional, scientific and technical activities (not including environmental consultancy or quantity sur | | | |
| 75 Veterinary activities | | | |
| 75.0 Veterinary activities | | | |
| 75.00 Veterinary activities | | | |
