| INEOS SILICAS LIMITED | Chemicals | 1896 | Full accounts |
| NEW NORDIC LIMITED | Pharmaceuticals | 1995 | Full accounts |
| A.A.S.C. (ANTIOXIDANTS ANALYSTS SUPPLIERS & CONSULTANTS) LIMITED | Food products | 1997 | Total exemption (full) |
| TARGET FLUID SERVICES LIMITED | Machinery and equipment | 1997 | Total exemption (full) |
| INEOS OXIDE LIMITED | Chemicals | 1998 | Full accounts |
| INEOS FLUOR LIMITED | Chemicals | 2000 | Full accounts |
| SMB PLATING LIMITED | Fabricated metal products | 2002 | Total exemption (full) |
| THE REAL JAM AND CHUTNEY COMPANY LIMITED | Food products | 2004 | Small company accounts |
| INEOS AROMATICS LIMITED | Chemicals | 2007 | Full accounts |
| INEOS MANUFACTURING (HULL) LIMITED | Chemicals | 2008 | Full accounts |
| INEOS CHEMICALS GRANGEMOUTH LIMITED | Chemicals | 2009 | Audit-exempt subsidiary |
| INEOS FILMS LIMITED | Chemicals | 2009 | Full accounts |
| INEOS SALES (UK) LIMITED | Coke and refined petroleum | 2010 | Full accounts |