| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| FILE EXPRESS LIMITED | 03280676 | 02/02/2015 | Dissolved |
| IRON MOUNTAIN GROUP (EUROPE) LIMITED | 03667412 | 12/12/2012 | Dissolved |
| IRON MOUNTAIN MAYFLOWER LIMITED | 05042621 | 12/12/2012 | Dissolved |
| IRON MOUNTAIN PLE LIMITED | 03714414 | 12/12/2012 | Dissolved |
| IRON MOUNTAIN SECURE SHREDDING LIMITED | 03094610 | 12/12/2012 | Dissolved |
| KESTREL DATA SERVICES LIMITED | 01177562 | 12/12/2012 | Dissolved |
| NOVO GROUP LIMITED | 00438900 | 30/09/2017 | Insolvent |
| NOVO HOLDINGS LIMITED | 01733629 | 30/09/2017 | Insolvent |
| NOVO OVERSEAS LIMITED | 02893216 | 30/09/2017 | Insolvent |
| PREFERRED MEDIA LIMITED | 02974071 | 05/10/2016 | Dissolved |
| RECALL (LONDON) LIMITED | 04119880 | 22/09/2016 | Dissolved |
| RECALL EUROPE FINANCE LIMITED | 08625047 | 02/05/2016 | Dissolved |
| RECALL GQ LIMITED | 02457556 | 22/09/2016 | Dissolved |
| RECALL SHREDDING LIMITED | 03922558 | 22/09/2016 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BONDED SERVICES ACQUISITION LTD | 07617038 | 30/09/2017 | 08/01/2021 | Silver |
| BONDED SERVICES GROUP LIMITED | 05163852 | 30/09/2017 | 08/01/2021 | Silver |
| BRITANNIA DATA MANAGEMENT LIMITED | 01575446 | 12/12/2012 | 08/01/2021 | Silver |
| DISASTER RECOVERY SERVICES LIMITED | 02063535 | 30/11/2018 | 08/01/2021 | Insolvent |
| HAWORTH GROUP HOLDINGS (UK) LIMITED | 07838188 | 30/11/2018 | 08/01/2021 | Insolvent |
| HAWORTH GROUP LIMITED | 02262052 | 30/11/2018 | 08/01/2021 | Insolvent |
| IRON MOUNTAIN (UK) DATA CENTRE LIMITED | 10885528 | 26/07/2017 | 08/01/2021 | Amber |
| IRON MOUNTAIN (UK) EES HOLDINGS LIMITED | 08937462 | 13/03/2014 | 08/01/2021 | Silver |
| IRON MOUNTAIN (UK) PLC | 01478540 | 12/12/2012 | 08/01/2021 | Silver |
| IRON MOUNTAIN (UK) SERVICES LIMITED | 08333429 | 17/12/2012 | 08/01/2021 | Two Red Flags |
| IRON MOUNTAIN DIMS LIMITED | 02760301 | 12/12/2012 | 08/01/2021 | One Red Flag |
| IRON MOUNTAIN EUROPE (GROUP) LIMITED | 05882719 | 12/12/2012 | 08/01/2021 | Silver |
| IRON MOUNTAIN EUROPE LIMITED | 02321917 | 12/12/2012 | 08/01/2021 | Gold |
| IRON MOUNTAIN HOLDINGS (EUROPE) LIMITED | 03847309 | 12/12/2012 | 08/01/2021 | One Red Flag |
| IRON MOUNTAIN INTERNATIONAL (HOLDINGS) LIMITED | 08322905 | 04/06/2015 | 08/01/2021 | Bronze |
| IRON MOUNTAIN MDM LIMITED | 01447686 | 12/12/2012 | 08/01/2021 | Not Trading |
| IRON MOUNTAIN UK SERVICES (HOLDINGS) LIMITED | 08322913 | 04/06/2015 | 08/01/2021 | Silver |
| RECALL EUROPE LIMITED | 01136000 | 02/05/2016 | 08/01/2021 | Insolvent |
| RECALL LIMITED | 01331798 | 22/09/2016 | 08/01/2021 | Insolvent |
| SARACEN DATASTORE LIMITED | 02652784 | 31/01/2019 | 08/01/2021 | Insolvent |
| SHRED-IT SECURE LIMITED | 08333383 | 17/12/2012 | 01/12/2014 | Dissolved |