| A. & J. ROBERTSON (GRANITE) LIMITED | Glass, ceramics, cement and stone | 1963 | Group accounts |
| SEMCO MARITIME LIMITED | Electrical equipment | 1978 | Full accounts |
| TRITECH INTERNATIONAL LIMITED | Machinery and equipment | 1983 | Full accounts |
| ASHTEAD TECHNOLOGY LIMITED | Machinery and equipment | 1985 | Full accounts |
| KONGSBERG MARITIME LIMITED | Other manufacturing | 1987 | Full accounts |
| JFD LIMITED | Other manufacturing | 1990 | Full accounts |
| SUB-DRILL SUPPLY LIMITED | Machinery and equipment | 1992 | Total exemption (full) |
| ALFRED CHEYNE ENGINEERING LIMITED | Machinery and equipment | 1996 | Full accounts |
| LICECOMB ENGINEERING LIMITED | Rubber and plastics | 2009 | Total exemption (full) |