| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ATOS ORIGIN BARBADOS LIMITED | 02144824 | 01/01/2007 | Dissolved |
| Computer Analysts & Programmers Ltd | 00723035 | 14/07/2008 | Dissolved |
| Convergent Europe Ltd | 02842825 | 01/01/2007 | Dissolved |
| Sema Canada Ltd | 02767954 | 01/01/2007 | Dissolved |
| Sema Telecom Services Ltd | 03958430 | 01/01/2007 | Dissolved |
| Syntax Managed Services Ltd | 02442594 | 14/07/2008 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ATOS CONSULTING LIMITED | 04312380 | 01/01/2007 | 01/01/2012 | Gold |
| ATOS INTERNATIONAL IT LIMITED | 01907841 | 01/01/2007 | 01/01/2012 | Bronze |
| ATOS INVESTMENTS LIMITED | 04140467 | 01/01/2007 | 01/01/2012 | Gold |
| ATOS IT SERVICES LIMITED | 01240677 | 01/01/2007 | 01/01/2012 | Amber |
| ATOS IT SERVICES UK LIMITED | 01245534 | 01/01/2007 | 01/01/2012 | Amber |
| ATOS IT SOLUTIONS AND SERVICES LIMITED | 01203466 | 03/08/2011 | 01/01/2012 | Not Trading |
| ATOS LIMITED | 03290446 | 01/01/2007 | 01/01/2012 | Bronze |
| ATOS UK INTERNATIONAL IT SERVICES LIMITED | 02479329 | 01/01/2007 | 01/01/2012 | Silver |
| ATOS UK IT HOLDINGS LIMITED | 04451247 | 01/01/2007 | 01/01/2012 | Amber |
| ATOS UK IT LIMITED | 02479330 | 01/01/2007 | 01/01/2012 | Silver |
| BARABAS LIMITED | 03294014 | 01/01/2007 | 01/01/2012 | Not Trading |
| BR BUSINESS SYSTEMS LIMITED | 03222541 | 01/01/2007 | 01/01/2012 | Not Trading |
| COMPUTER SCIENCES UK LIMITED | 02594248 | 31/07/2006 | 20/11/2006 | Dissolved |
| CONTINUUM (UK) HOLDINGS LIMITED | 01824673 | 31/03/2003 | 20/11/2006 | Dissolved |
| CONTINUUM DIRECT LIMITED | 02198526 | 31/03/2003 | 20/11/2006 | Dissolved |
| CSC COMPUTER SCIENCES LIMITED | 00963578 | 10/06/2003 | 20/11/2006 | Silver |
| CSC CORPORATION LIMITED | 01812179 | 31/03/2003 | 20/11/2006 | Dissolved |
| CSC SERVICES NO.1 LIMITED | 02199638 | 31/03/2003 | 20/11/2006 | Dissolved |
| CSC SERVICES NO.2 LIMITED | 03037923 | 31/03/2003 | 20/11/2006 | Dissolved |
| Csc Fsg Ltd | 03062561 | 31/03/2003 | 20/11/2006 | Dissolved |
| DXC UK (MIDDLE EAST) LIMITED | 02846149 | 02/02/2001 | 20/11/2006 | Insolvent |
| ESPRIT DIGITAL SERVICES LIMITED | 04691604 | 09/06/2008 | 01/01/2012 | Not Trading |
| LANDMARC SUPPORT SERVICES LIMITED | 04396241 | 10/03/2005 | 18/11/2006 | Bronze |
| SEMA INVESTMENT UK LIMITED | 04168291 | 01/01/2007 | 01/01/2012 | Gold |
| SHERE LIMITED | 00078235 | 26/03/2010 | 01/01/2012 | Gold |