| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BUSINESSWATCH UK SECURITY SERVICES LIMITED | 06067073 | 08/07/2010 | Dissolved |
| COMMUNICATION CONSULTANTS (UK) LIMITED | 03009748 | 01/11/2000 | Not Trading |
| COMMUNICATION CONSULTANTS (UK) LIMITED | 03009748 | 01/11/2000 | Not Trading |
| GARDLINE HYDRO LIMITED | 04589978 | 06/03/2003 | Dissolved |
| GARDLINE PENSION TRUSTEES LIMITED | 03859837 | 15/10/1999 | Dissolved |
| GARDWELL SECURITY (EASTERN) LIMITED | 04125473 | 06/07/2001 | Dissolved |
| GARDWELL SECURITY (PETERBOROUGH) LIMITED | 01960363 | 01/06/2002 | Dissolved |
| INTERNATIONAL MARINE SERVICE CO. LIMITED | 02952413 | 20/07/1994 | Dissolved |
| LANKELMA ANDREWS LIMITED | 01323483 | 15/02/2006 | Dissolved |
| SCOOT HOLDINGS LIMITED | 09745795 | 24/08/2015 | Dissolved |
| SOUTHTOWN CRANE HIRE LIMITED | 04621093 | 18/12/2002 | Dissolved |
| STNA LIMITED | 02925435 | 28/04/1995 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ALICAT WORKBOATS LIMITED | 06890804 | 01/06/2009 | 01/02/2018 | Silver |
| DARDAN (SECURITY) LIMITED | 01124370 | 07/01/2009 | 26/06/2017 | Not Trading |
| DARDAN SECURITY (SYSTEMS) LIMITED | 06395272 | 10/10/2007 | 26/06/2017 | Silver |
| EAST COAST DIESEL LIMITED | 03729518 | 21/06/2010 | 01/02/2018 | Insolvent |
| GARDLINE CABLE SERVICES LIMITED | 06646721 | 15/07/2008 | 01/02/2018 | Dissolved |
| GARDLINE DORMANT LIMITED | 07958977 | 21/02/2012 | 01/02/2018 | Dissolved |
| GARDLINE ENVIRONMENTAL LIMITED | 04589816 | 06/03/2003 | 01/02/2018 | Amber |
| GARDLINE GEOSCIENCES LIMITED | 04692040 | 12/03/2003 | 01/02/2018 | Silver |
| GARDLINE GEOSURVEY (NORWAY) LIMITED | 06272818 | 29/06/2007 | 01/02/2018 | Amber |
| GARDLINE HOLDINGS LIMITED | 09364881 | 22/12/2014 | 01/02/2018 | Silver |
| GARDLINE LANKELMA MIDDLE EAST LIMITED | 01217757 | 09/06/1998 | 01/02/2018 | Dissolved |
| GARDLINE LIMITED | 04589821 | 06/03/2003 | 01/02/2018 | Bronze |
| GARDLINE MARINE SCIENCES LIMITED | 02571313 | 06/03/2003 | 01/02/2018 | Silver |
| GARDLINE SHIPPING LIMITED | 00954145 | 10/09/1993 | 01/02/2018 | Silver |
| GARDLINE SURVEYS LIMITED | 07965406 | 27/02/2012 | 01/02/2018 | Dissolved |
| GARDWELL SECURITY LIMITED | 03168285 | 04/04/1996 | 26/06/2017 | Not Trading |
| GSL DARDAN HOLDINGS LIMITED | 06758117 | 07/01/2009 | 26/06/2017 | Bronze |
| GSL DARDAN LIMITED | 04384007 | 07/01/2009 | 26/06/2017 | Bronze |
| INTEGRAL SECURITY LTD | 01707060 | 07/01/2009 | 26/06/2017 | Not Trading |
| LANKELMA LIMITED | 03819403 | 13/11/2003 | 10/10/2017 | Silver |
| MARINE PLANNING CONSULTANTS LTD | 07377439 | 15/09/2010 | 01/02/2018 | Dissolved |
| MINERVA TECHNICAL SOLUTIONS LIMITED | 09656636 | 25/06/2015 | 01/02/2018 | Insolvent |
| OAKAURI PROJECTS LIMITED | 09551123 | 29/04/2015 | 29/04/2015 | Silver |
| RICHARDS DRY DOCK AND ENGINEERING LIMITED | 02978069 | 07/02/1995 | 01/02/2018 | Gold |
| SOUTH BOATS IOW LIMITED | 08268934 | 25/10/2012 | 01/02/2018 | Dissolved |
| TRINITY MARINE SERVICES LIMITED | 08003214 | 29/01/2016 | 01/02/2018 | Dissolved |
| ULTIMETEOR LTD | 00896408 | 23/11/1991 | 07/10/2005 | One Red Flag |