| A.H.Allen Steel Services Limited | Wholesale & retail | 1992 |
| Advanced Steel Services Limited | Wholesale & retail | 1992 |
| Barrett Central Processing Limited | Wholesale & retail | 1995 |
| Barrett Constructional Steel Limited | Wholesale & retail | 2004 |
| Barrett Engineering Steel Bolton Limited | Wholesale & retail | 1992 |
| Barrett Engineering Steel Ireland Limited | Extraterritorial | 2000 |
| Barrett Engineering Steel Newport Limited | Wholesale & retail | 2001 |
| Barrett Engineering Steel North Limited | Extraterritorial | 1995 |
| Barrett Engineering Steel South West Limited | Wholesale & retail | 1939 |
| Barrett National Steel Services Limited | Extraterritorial | 2003 |
| Barrett Offsite Steel Solutions Limited | Wholesale & retail | 2000 |
| Barrett Precision Tubes Limited | Wholesale & retail | 2004 |
| Barrett Processing Services Limited | Wholesale & retail | 1993 |
| Barrett Steel Buildings Limited | Wholesale & retail | 2001 |
| Barrett Steel Energy Products Limited | Wholesale & retail | 2004 |
| Barrett Steel Limited | Wholesale & retail | 1992 |
| Barrett Steel Properties Limited | Extraterritorial | 1992 |
| Barrett Steel Services Limited | Wholesale & retail | 1992 |
| Barrett Steel South West Limited | Wholesale & retail | 2004 |
| Barrett Strip & Alloys Limited | Wholesale & retail | 1995 |
| C. Roberts & Co. (Steel) Limited | Wholesale & retail | 1995 |
| C. Roberts Steel Services (Manchester) Limited | Wholesale & retail | 1995 |
| Consett Steel Services Limited | Wholesale & retail | 1992 |
| Dectamill Group Limited | Manufacturing | 1975 |
| Fastec Handrail Systems Limited | Wholesale & retail | 2000 |
| Gainsborough Steel Services Limited | Wholesale & retail | 1992 |
| Goodman Steel Services Limited | Wholesale & retail | 1992 |
| H.K.B Steels Limited | Wholesale & retail | 2000 |
| Lasertube Limited | Wholesale & retail | 2000 |
| Lilleshall Steel Services Limited | Wholesale & retail | 1992 |
| Load Choker UK Limited | Wholesale & retail | 2000 |
| Mattersons Limited | Wholesale & retail | 2001 |
| Star Tubes (Northern) Limited | Wholesale & retail | 2004 |
| Star Tubes (Southern) Limited | Wholesale & retail | 2004 |
| Tubes (UK) Limited | Wholesale & retail | 1992 |
| Woodberry Holdings Limited | Wholesale & retail | 2003 |
| Yarmouth Steel Services Limited | Wholesale & retail | 1992 |
| Yorkshire Fence Hire Limited | Administrative & support | 2003 |