| WILLIAMSON & COMPANY, LIMITED | Private company limited by shares | Dissolved |
| T B WILLIAMSON LIMITED | Private company limited by shares | Live |
| Williamson Limited | Private company limited by shares | Live |
| WILLIAMSON & ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| WILLIAMSON GROUP LIMITED -THE- | Private company limited by shares | Live |
| WILLIAMSON MARINE SERVICE LIMITED | Private company limited by shares | Live |
| WILLIAMSON SECRETARIAL COMPANY LIMITED | Private company limited by shares | Live Commenced dormancy on 05-Oct-1993 |
| Williamson-Dickie HK Holding Company Limited | Private company limited by shares | Live |
| Williamson-Dickie APAC Holding Company Limited | Private company limited by shares | Live |