| HARROD UK LIMITED | Other manufacturing | 1966 | Full accounts |
| LOWESTOFT OFFSHORE SERVICES LIMITED | Repair and installation of machinery | 1982 | Small company accounts |
| PITKIN & RUDDOCK (BISHOP'S STORTFORD) LTD | Repair and installation of machinery | 1983 | Audit-exempt subsidiary |
| APPLIED DESIGN AND ENGINEERING LIMITED | Machinery and equipment | 1984 | Total exemption (full) |
| EAST ANGLIAN COMPUTER SUPPLIES LIMITED | Printing and recorded media | 1984 | Total exemption (full) |
| M.P. (EASTERN) LIMITED | Fabricated metal products | 1985 | Total exemption (full) |
| JME LTD | Electrical equipment | 1986 | Total exemption (full) |
| TRIAC SERVICES LIMITED | Electrical equipment | 1993 | Total exemption (full) |
| LACONS BREWERY LIMITED | Beverages | 1993 | Full accounts |
| STARFROST (UK) LIMITED | Machinery and equipment | 1995 | Full accounts |
| FABRIC FLARE SOLUTIONS LIMITED | Textiles | 2000 | Total exemption (full) |
| CEFAS TECHNOLOGY LIMITED | Electrical equipment | 2001 | Small company accounts |
| ACORN TARGET SYSTEMS LTD | Machinery and equipment | 2002 | Total exemption (full) |
| STEEL MASTERS (NORWICH) LTD | Fabricated metal products | 2003 | Total exemption (full) |
| BRIDGECRAFT LIMITED | Ships, aircraft, rail and other transport | 2003 | Total exemption (full) |
| ALPINE FABRICATION SERVICES LIMITED | Fabricated metal products | 2003 | Total exemption (full) |
| L.E.C. MARINE (KLYNE) LIMITED | Electrical equipment | 2005 | Small company accounts |
| 3 OHMS LTD | Computers, electronics and optics | 2005 | Total exemption (full) |
| PITKIN & RUDDOCK (BURY ST. EDMUNDS) LIMITED | Repair and installation of machinery | 2006 | Audit-exempt subsidiary |
| PITKIN & RUDDOCK (IPSWICH) LIMITED | Repair and installation of machinery | 2006 | Audit-exempt subsidiary |
| PITKIN & RUDDOCK (LOWESTOFT) LIMITED | Repair and installation of machinery | 2006 | Audit-exempt subsidiary |
| GREEN JACK BREWING COMPANY LIMITED | Beverages | 2008 | Total exemption (full) |
| D & J METALS LIMITED | Repair and installation of machinery | 2008 | Total exemption (full) |
| VINYL INSTALLATION LIMITED | Printing and recorded media | 2009 | Total exemption (full) |
| R & P METALWORK LIMITED | Machinery and equipment | 2009 | Total exemption (full) |
| KME SYSTEMS LIMITED | Repair and installation of machinery | 2010 | Total exemption (full) |
| SEATRIUM OFFSHORE RENEWABLE SERVICES LTD | Fabricated metal products | 2010 | Full accounts |