| Company name | Company reg number | SME/VCS | VCS reg number | Postcode |
|---|---|---|---|---|
| British Telecommunications - BT redcare | 1800000 | E1 8EE | ||
| British Telecommunications - Sales | 1800000 | E1 8EE | ||
| British Telecommunications - BT Defence | 1800000 | E1 8EE | ||
| British Telecommunications - Broadband Developement | 1800000 | E1 8EE |