| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| A.C.H. (MEDICAL LEGAL) LIMITED | 07212686 | 06/04/2010 | One Red Flag |
| A.C.H. (SOUTH) LIMITED | 07212778 | 06/04/2010 | Dissolved |
| A.C.H. (YORKSHIRE) LIMITED | 07212693 | 06/04/2010 | Silver |
| ANALYSIS MEDICA LIMITED | 05608738 | 06/11/2005 | Dissolved |
| ITECH MEDICA LIMITED | 05818343 | 18/09/2006 | Dissolved |
| ITECH MEDICA LIMITED | 05818343 | 16/05/2006 | Dissolved |
| KENWOOD ONE HEALTH LIMITED | 06055858 | 17/01/2007 | Dissolved |
| ONE HEALTH GROUP - SHEFFIELD LIMITED | 05081672 | 16/11/2007 | Dissolved |
| ONE HEALTH GROUP - WINDSOR LIMITED | 04201064 | 16/11/2007 | Dissolved |
| PSALTER IT LIMITED | 05764998 | 07/09/2006 | Dissolved |
| THE ONE HEALTH GROUP - EDUCATIONAL SERVICES LIMITED | 05290994 | 16/11/2007 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| 131 PSALTER LANE PROPERTY MANAGEMENT LIMITED | 06801487 | 26/01/2009 | 27/09/2019 | Dissolved |
| ONE HEALTH GROUP EXECUTIVE LIMITED LIABILITY PARTNERSHIP | OC316275 | 01/04/2006 | 23/07/2019 | Dissolved |
| ONE HEALTH GROUP LONDON LIMITED LIABILITY PARTNERSHIP | OC321429 | 04/08/2006 | 23/07/2019 | Dissolved |
| ONE HEALTH GROUP PLC | 04201068 | 18/10/2005 | 20/09/2019 | Gold |
| ONE HEALTH GROUP WINDSOR LIMITED LIABILITY PARTNERSHIP | OC316273 | 01/11/2007 | 23/07/2019 | Dissolved |
| THE ONE HEALTH GROUP - CONTRACTS LIMITED | 05081675 | 16/11/2007 | 20/09/2019 | Bronze |
| THE ONE HEALTH GROUP - MEDICO-LEGAL LIMITED | 05290989 | 16/11/2007 | 20/09/2019 | Bronze |