| Company | Timeline | Status | |
| North Tyne Roadstone Limited Director • Director | 1 Jan 2004←3 Months→22 Apr 2004 | Active | |
| Tarmac Trading Limited Director • Director | 1 Jan 2004←3 Months→22 Apr 2004 | Active | |
| Hepplewhite Quarries & Plant Hire Limited Director • Director | 20 Sep 2000←2 Years 11 Months→29 Aug 2003 | Dissolved | |
| Mineral Products Association Limited Director • Quarries Director | 4 May 2000←5 Months→23 Oct 2000 | Active | |
| North Tyne Roadstone Limited Director • Director | 3 Apr 2000←2 Years 10 Months→19 Feb 2003 | Active | |
| Tendley Quarries Limited Director • Director | 29 Mar 2000←4 Years→22 Apr 2004 | Active | |
| Environmental Aggregates Limited Director • Company Director | 12 Sep 1999←11 Months→14 Aug 2000 | Dissolved | |
| Greater London Asphalt Limited Director • Company Director | 12 Sep 1999←4 Years→22 Apr 2004 | Dissolved | |
| Tarmac Caledonian Limited Director • Director | 1 Aug 1999←4 Years→22 Apr 2004 | Active | |
| Tilcon Scotland Limited Director • Director | 1 Aug 1999←4 Years→22 Apr 2004 | Active | |
