| KIRBY LIMITED | Private company limited by shares | Dissolved |
| JB KIRBY INC LIMITED | Private company limited by shares | Live |
| Kirby Marine Co., Limited | Private company limited by shares | Dissolved |
| EAST KIRBY LIMITED | Private company limited by shares | Dissolved |
| KIRBY ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| KIRBY GROUP LIMITED | Private company limited by shares | Live Commenced dormancy on 17-Apr-2013 |
| Kirby (HK) Limited | | Live |
| KIRBY HOUSE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| KIRBY PAPER INTERNATIONAL (HK) LIMITED | Private company limited by shares | Live |
| KIRBY TOTECO INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| Simon Kirby and Associates Limited | Private company limited by shares | Dissolved |
| WEST KIRBY INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| KIRBY WILSHAW AND COMPANY LIMITED | Private company limited by shares | Dissolved |