| 01 | Chartered Institute of Personnel and Development | 48.3 |
| 02 | Association for Project Management | 44.0 |
| 03 | ATD | 35.0 |
| 04 | PMI | 34.6 |
| 05 | SHRM | 34.4 |
| 06 | Chartered Management Institute (CMI) | 30.0 |
| 07 | AMA | 27.6 |
| 08 | IEEE | 23.0 |
| 09 | apm.org.uk | 21.8 |
| 10 | American Institute of Certified Public Accountants | 18.7 |
| 11 | Toastmasters International | 17.9 |
| 12 | Association of Chartered Certified Accountants | 17.7 |
| 13 | CIMA | 16.9 |
| 14 | CFA Institute | 16.3 |
| 15 | IEEE Computer Society | 15.8 |
| 16 | ISACA | 15.4 |
| 17 | ISC2 | 15.0 |
| 18 | CompTIA | 14.7 |
| 19 | BCS, The Chartered Institute for IT | 14.4 |
| 20 | IET | 14.0 |
| 21 | ASME | 13.8 |
| 22 | American Society of Civil Engineers (ASCE) | 13.6 |
| 23 | American Staffing Association | 13.5 |
| 24 | NSPE | 13.5 |
| 25 | HRCI | 13.0 |
| 26 | Chartered Institute of Marketing (CIM) | 12.9 |
| 27 | PRSA | 12.8 |
| 28 | Institute of Data and Marketing | 12.7 |
| 29 | nursing councils | 12.5 |
| 30 | nursing boards | 12.4 |