| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BELLEVUE HEALTHCARE TRUST PLC | 10415235 | 17/10/2016 | Silver |
| Club Athletica Ltd | 02834869 | 19/05/2000 | Dissolved |
| Euroserv Ltd | 01562858 | 30/04/2000 | Dissolved |
| International Aeradio Consultancy Services Ltd | 00952762 | 30/04/2000 | Dissolved |
| Sandco 896 Ltd | 05589784 | 20/10/2006 | Dissolved |
| Serco Field Services Ltd | 02050174 | 30/04/2000 | Dissolved |
| Serco International Fire Training Centre Ltd | 01563367 | 30/04/2000 | Dissolved |
| Serco Management Ltd | 02107698 | 19/05/2000 | Dissolved |
| Serco Quality & Safety Services Ltd | 02475633 | 30/04/2000 | Dissolved |
| Serco Resource Management Ltd | 02213159 | 30/04/2000 | Dissolved |
| Serco Skysafe Limited | 02496715 | 30/04/2000 | Dissolved |
| Serco Southall Services Ltd | 02054685 | 19/04/2001 | Dissolved |
| VENTUS VCT PLC | 05205442 | 01/04/2017 | Dissolved |
| in Business Ltd | 03003679 | 25/11/1995 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ABRDN EQUITY INCOME TRUST PLC | 02648152 | 01/05/2011 | 23/01/2020 | Bronze |
| BARINGS EMERGING EMEA OPPORTUNITIES PLC | 04560726 | 05/07/2004 | 15/01/2015 | Silver |
| Club Athletica (Worcester) Ltd | 02152388 | 19/05/2000 | 29/10/2002 | Dissolved |
| Community Leisure Management Ltd | 02163239 | 30/04/2000 | 20/09/2002 | Dissolved |
| DIALTIME PLUS LIMITED | 04288483 | 12/03/2012 | 03/10/2014 | Dissolved |
| EDEN REGENERATION LTD | 08152384 | 23/07/2012 | 11/12/2012 | Strike Off |
| FANMAILUK.COM LIMITED | 04117064 | 12/03/2012 | 03/10/2014 | Dissolved |
| JPMORGAN EUROPEAN GROWTH & INCOME PLC | 00237958 | 01/10/2013 | 30/09/2022 | Gold |
| London Call Centre Co Ltd | 03334238 | 30/04/2000 | 20/09/2002 | Dissolved |
| NEWCASTLE UNITED 1892 LIMITED | 03281264 | 20/11/1996 | 01/05/1998 | Not Trading |
| OPEN CLASP THEATRE COMPANY | 05137687 | 30/06/2016 | 06/12/2016 | Gold |
| PLACES FOR PEOPLE FINANCE PLC | 10451754 | 01/10/2017 | 05/06/2018 | Gold |
| PLACES FOR PEOPLE GROUP LIMITED | 03777037 | 01/10/2017 | 05/06/2018 | Bronze |
| PLACES FOR PEOPLE TREASURY PLC | 09272235 | 01/10/2017 | 05/06/2018 | Silver |
| PLACES FOR PEOPLE VENTURES LIMITED | 09925149 | 01/10/2017 | 05/06/2018 | Silver |
| PLACES FOR PEOPLE VENTURES OPERATIONS LIMITED | 08740397 | 01/10/2017 | 05/06/2018 | Bronze |
| PLUTUS POWERGEN PLC | 05859612 | 01/08/2014 | 13/06/2016 | One Red Flag |
| Prime Contractors Ltd | 02378246 | 30/04/2000 | 20/09/2002 | Dissolved |
| SERCO INTERNATIONAL LIMITED | 02324094 | 02/11/2000 | 14/02/2002 | Silver |
| SERCO LIMITED | 00242246 | 15/02/2000 | 22/07/2002 | Silver |
| SERCO-IAL LIMITED | 00427272 | 27/07/2000 | 10/10/2002 | Silver |
| SUSTAINABLE ALLENDALE CIC | 07131805 | 21/01/2010 | 21/06/2012 | Dissolved |
| Serco Contracting Ltd | 02435848 | 07/06/2001 | 20/09/2002 | Dissolved |
| Serco Development Services Ltd | 00592499 | 30/04/2000 | 20/09/2002 | Dissolved |
| Serco Inactive 4 Ltd | 00850447 | 30/04/2000 | 20/09/2002 | Dissolved |
| Serco Leisure Ltd | 02202587 | 30/04/2000 | 20/09/2002 | Dissolved |
| Serco Maintenance Services Ltd | 02674902 | 30/04/2000 | 20/09/2002 | Dissolved |
| Serco Operations Ltd | 01858592 | 30/04/2000 | 19/09/2001 | Dissolved |
| Serco Operations Ltd | 01858592 | 19/09/2001 | 30/10/2002 | Dissolved |
| Serco Project Development Ltd | 02834872 | 19/05/2000 | 29/10/2002 | Dissolved |
| Serco Systems Ltd | 01861237 | 16/01/2001 | 10/10/2002 | Dissolved |
| Serco Test Technology Ltd | 01413253 | 19/09/2001 | 30/10/2002 | Dissolved |
| Sercoserve Ltd | 02497013 | 30/04/2000 | 20/09/2002 | Dissolved |
| Superbusy Ltd | 02533020 | 30/04/2000 | 20/09/2002 | Dissolved |
| THE PLACES FOUNDATION | 01284754 | 01/10/2017 | 05/06/2018 | Bronze |
| THE ROAD TO HAPPINESS LIMITED | 08062234 | 09/05/2012 | 31/12/2015 | Bronze |
| WORLDWIDE HEALTHCARE TRUST PLC | 03023689 | 25/02/2004 | 21/09/2016 | Silver |