| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ARCHIVE SERVICES LIMITED | 02307053 | 15/07/2008 | Dissolved |
| ARCUS DATA SECURITY LIMITED | 02640804 | 15/07/2008 | Dissolved |
| DATA DISPOSAL LIMITED | 01539621 | 15/07/2008 | Dissolved |
| DATAVAULT HOLDINGS LIMITED | 03638141 | 15/07/2008 | Dissolved |
| DATAVAULT LIMITED | SC080642 | 15/07/2008 | Dissolved |
| DOCUMENT STORAGE COMPANY LIMITED(THE) | 02109452 | 15/07/2008 | Dissolved |
| ELBOROUGH CONSULTING LIMITED | 04712772 | 26/03/2003 | Silver |
| FILE-SAFE LIMITED | SC147075 | 15/07/2008 | Dissolved |
| IRON MOUNTAIN LIVINGSTON LIMITED | SC226889 | 15/07/2008 | Dissolved |
| IRON MOUNTAIN PLE LIMITED | 03714414 | 15/07/2008 | Dissolved |
| IRON MOUNTAIN SCOTLAND (HOLDINGS) LIMITED | SC150077 | 15/07/2008 | Dissolved |
| IRON MOUNTAIN SCOTLAND LIMITED | SC096145 | 15/07/2008 | Dissolved |
| IRON MOUNTAIN SECURE SHREDDING LIMITED | 03094610 | 15/07/2008 | Dissolved |
| JAD (93) LIMITED | SC143870 | 15/07/2008 | Dissolved |
| Jones & Crossland Ltd | 00641974 | 15/07/2008 | Dissolved |
| KESTREL DATA (UK) LIMITED | 01575457 | 15/07/2008 | Dissolved |
| SILVER SKY LIMITED | FC021495 | 15/07/2008 | Strike Off |
| Security Destruction Ltd | 02571871 | 15/07/2008 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Aol (Uk Online) Ltd | 03053966 | 20/03/2007 | 16/05/2008 | Dissolved |
| Aol Holdings (Uk) (2) Ltd | 03462694 | 20/03/2007 | 16/05/2008 | Dissolved |
| Aol Ltd | 03114559 | 20/03/2007 | 16/05/2008 | Dissolved |
| Aol Online (Uk Management) Ltd | 03052992 | 20/03/2007 | 16/05/2008 | Dissolved |
| Aol Service Operations (Uk Management) Ltd | 03565684 | 20/03/2007 | 16/05/2008 | Dissolved |
| BRITANNIA DATA MANAGEMENT LIMITED | 01575446 | 15/07/2008 | 14/10/2016 | Silver |
| Compuserve Interactive Services Ltd | 03462500 | 20/03/2007 | 16/05/2008 | Dissolved |
| Cyberfin Online U K Holding | 03831657 | 20/03/2007 | 16/05/2008 | Dissolved |
| IRON MOUNTAIN (UK) EES HOLDINGS LIMITED | 08937462 | 13/03/2014 | 14/10/2016 | Silver |
| IRON MOUNTAIN (UK) PLC | 01478540 | 15/07/2008 | 14/01/2014 | Silver |
| IRON MOUNTAIN DIMS LIMITED | 02760301 | 15/07/2008 | 14/10/2016 | One Red Flag |
| IRON MOUNTAIN EUROPE (GROUP) LIMITED | 05882719 | 15/07/2008 | 14/10/2016 | Silver |
| IRON MOUNTAIN EUROPE LIMITED | 02321917 | 15/07/2008 | 14/10/2016 | Gold |
| IRON MOUNTAIN GROUP (EUROPE) LIMITED | 03667412 | 15/07/2008 | 14/10/2016 | Dissolved |
| IRON MOUNTAIN HOLDINGS (EUROPE) LIMITED | 03847309 | 15/07/2008 | 14/10/2016 | One Red Flag |
| IRON MOUNTAIN MAYFLOWER LIMITED | 05042621 | 15/07/2008 | 14/10/2016 | Dissolved |
| IRON MOUNTAIN MDM LIMITED | 01447686 | 15/07/2008 | 14/10/2016 | Not Trading |
| KESTREL DATA SERVICES LIMITED | 01177562 | 15/07/2008 | 14/10/2016 | Dissolved |
| YAHOO-UK LIMITED | 03462696 | 20/03/2007 | 16/05/2008 | Gold |