| WHITTAKER COMPANY LIMITED | Private company limited by shares | Dissolved |
| WHITTAKER LIMITED | Private company limited by shares | Live |
| HITTI WHITTAKER MCINTOSH LIMITED | Private company limited by shares | Dissolved |
| WHITTAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| WHITTE INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| PARSONS & WHITTEMORE FAR EAST LIMITED | Private company limited by shares | Dissolved |
| Morgan Anderson & Whitter Limited | Private company limited by shares | Live |
| WHITTERLAND LIMITED | Private company limited by shares | Dissolved |
| WHITTIER LIMITED | Private company limited by shares | Dissolved |
| WHITTING COMPANY LIMITED | Private company limited by shares | Dissolved |
| WHITTINGHAM COMPANY LIMITED | Private company limited by shares | Live |
| TIM WHITTLE DESIGNS LIMITED | Private company limited by shares | Dissolved |
| WHITTLEDEAN COMPANY LIMITED | Private company limited by shares | Dissolved |
| WHITTY LIMITED | Private company limited by shares | Dissolved |
| WHITTY CONSULTANCY LIMITED | Private company limited by shares | Dissolved |