| HUGHES AND HOUGH, LIMITED | Private company limited by shares | Live |
| HOUGH INTERNATIONAL (HK) LIMITED | Private company limited by shares | Dissolved |
| HOUGHTON LIMITED | Private company limited by shares | Dissolved |
| Ogle and Houghton Asia Limited | Private company limited by shares | Live |
| Ogle and Houghton Limited | Private company limited by shares | Live |
| HOUGHTON ASIA PACIFIC COMPANY LIMITED | Private company limited by shares | Dissolved |
| HOUGHTON ASIA PACIFIC CO. LIMITED | Private company limited by shares | Live |
| ROGER HOUGHTON LIMITED | Private company limited by shares | Dissolved |
| ROGER HOUGHTON LOSS ADJUSTERS LIMITED | Private company limited by shares | Dissolved |
| ROGER HOUGHTON RECOVERIES LIMITED | Private company limited by shares | Dissolved |
| ROGER HOUGHTON (RECOVERY) LIMITED | | Live |
| ROGER HOUGHTON MOTOR SURVEYS LIMITED | Private company limited by shares | Live |