| Company | Timeline | Status | |
| W.Heffer & Sons Limited Director • Chartered Accountant | 16 Nov 2004←10 Months→30 Sep 2005 | Active | |
| Blackwell (Scotland) Limited Director • Chartered Accountant | 31 Jul 2002←3 Years→30 Sep 2005 | Active | |
Alden & Blackwell (Eton) Limited Director • Chartered Accountant | 29 May 2002←3 Years→30 Sep 2005 | Dissolved | |
Blackwell Properties (Bristol) Limited Director • Chartered Accountant | 22 Apr 2002←3 Years→30 Sep 2005 | Dissolved | |
| Blackwell UK Limited Director • Chartered Accountant | 17 Dec 2001←3 Years→30 Sep 2005 | Active | |
Blackwell's Central Services Limited Director • Chartered Accountant | 21 Jun 2000←5 Years→30 Sep 2005 | Dissolved | |
| BH Blackwell Limited Director • Chartered Accountant | 13 Jun 2000←5 Years→30 Sep 2005 | Active | |
Parker & Son Limited Director • Chartered Accountant | 13 Jun 2000←5 Years→30 Sep 2005 | Dissolved | |
Blackwell's Book Services Limited Director • Chartered Accountant | 5 Jun 2000←5 Years→30 Sep 2005 | Dissolved | |
| Blackwell (Trustees) Limited Director • Chartered Accountant | 22 May 2000←5 Years→30 Sep 2005 | Active | |
