| Castle Peak Heritage Limited | Private company limited by shares | Live |
| Castle Peak Innovations Limited | | Live |
| PEAK CASTLE INVESTMENT LIMITED | Private company limited by shares | Live |
| Castle Peak Investments No. 1 Limited | Private company limited by shares | Live |
| Castle Peak Investments No. 3 Limited | Private company limited by shares | Live |
| Castle Peak Investments No. 2 Limited | Private company limited by shares | Live |
| Castle Peak Investments No. 4 Limited | Private company limited by shares | Live |
| CASTLE PEAK SAM CHOW TIN HAU PALACE COMPANY LIMITED | Company limited by guarantee | Dissolved |
| CASTLE PEAK POWER COMPANY LIMITED | Private company limited by shares | Live |
| CASTLE PEAK PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| CASTLE PEAK BAY RESTAURANT LIMITED | Private company limited by shares | Dissolved |
| CASTLE PEAK TIMBER LIMITED | Private company limited by shares | Dissolved |
| PEAR CASTLE LIMITED | Private company limited by shares | Dissolved |
| PINE CASTLE LIMITED | Private company limited by shares | Dissolved |
| PINE CASTLE LIMITED | Private company limited by shares | Live |
| POLY CASTLE LIMITED | Private company limited by shares | Dissolved |
| POWER CASTLE LIMITED | Private company limited by shares | Live |
| CASTLE POWER LIMITED | Private company limited by shares | Live |
| POWER CASTLE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| POWERFUL CASTLE LIMITED | Private company limited by shares | Live |
| CASTLE PRODUCTS COMPANY LIMITED | Private company limited by shares | Live |
| SKY CASTLE SEA PRODUCTS LIMITED | Private company limited by shares | Live |
| CASTLE POLYBAG & PACKING PRODUCTS LIMITED | Private company limited by shares | Dissolved |
| WIN CASTLE PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| TOP CASTLE PROPERTIES LIMITED | Private company limited by shares | Live |
| SEA CASTLE PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| CASTLE PROPERTIES LIMITED | Private company limited by shares | Live |
| SKY CASTLE PROPERTIES LIMITED | Private company limited by shares | Live |
| MEGA CASTLE PROPERTIES LIMITED | Private company limited by shares | Live |
| CASTLE PEAK INVESTMENT PROPERTIES LIMITED | Private company limited by shares | Live |
| SMART CASTLE PROPERTIES LIMITED | Private company limited by shares | Live |
| HK Castle Property Limited | Private company limited by shares | Live |
| SEA CASTLE PROPERTY AGENCY LIMITED | Private company limited by shares | Dissolved |
| NEW CASTLE PROPERTY AGENCY LIMITED | Private company limited by shares | Live |
| CASTLE PROPERTY AGENCY LIMITED | Private company limited by shares | Live |
| Castle Peak Property Investment Limited | Private company limited by shares | Live |
| Quant Castle Limited | | Live |
| QUEEN CASTLE LIMITED | Private company limited by shares | Dissolved |
| QUEEN CASTLE LIMITED | Private company limited by shares | Live |
| QUEEN'S CASTLE COMPANY LIMITED | Private company limited by shares | Dissolved |
| Queen's Castle Limited | Private company limited by shares | Live |
| QUEST CASTLE LIMITED | Private company limited by shares | Live |
| CASTLE RANK LIMITED | Private company limited by shares | Live |
| RARE CASTLE LIMITED | Private company limited by shares | Live |
| CASTLE REALTY LIMITED | Private company limited by shares | Live |
| DISCOVERY CASTLE RECREATION ASSOCIATION LIMITED | Private company limited by shares | Live |
| REGENT CASTLE LIMITED | Private company limited by shares | Dissolved |
| REGENT CASTLE REALTY LIMITED | Private company limited by shares | Dissolved |
| REPUTED CASTLE ENTERPRISES COMPANY LIMITED | Private company limited by shares | Dissolved |
| CASTLE RESTAURANTS COMPANY LIMITED | Private company limited by shares | Dissolved |
| RICH CASTLE LIMITED | Private company limited by shares | Dissolved |
| RICH CASTLE LIMITED | Private company limited by shares | Dissolved |
| CASTLE RICH LIMITED | Private company limited by shares | Live |
| RICH CASTLE LIMITED | Private company limited by shares | Dissolved |
| RICH CASTLE LIMITED | Private company limited by shares | Dissolved |
| RICH CASTLE LIMITED | Private company limited by shares | Live |
| RICH CASTLE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| RICHEST CASTLE LIMITED | Private company limited by shares | Live |
| RIGHT CASTLE COMPANY LIMITED | Private company limited by shares | Dissolved |
| RIGHT CASTLE LIMITED | Private company limited by shares | Dissolved |
| RISE CASTLE LIMITED | Private company limited by shares | Live |
| RITZY CASTLE LIMITED | Private company limited by shares | Dissolved |
| CASTLE RIVER TRADING COMPANY LIMITED | Private company limited by shares | Live |
| Castle Rock IB Limited | Private company limited by shares | Live |
| ROCK CASTLE LIMITED | Private company limited by shares | Live |
| ROCY CASTLE LIMITED | Private company limited by shares | Dissolved |
| ROME CASTLE COMPANY LIMITED | Private company limited by shares | Dissolved |
| ROYAL CASTLE LIMITED | Private company limited by shares | Live |
| ROYAL CASTLE ENTERPRISE LIMITED | Private company limited by shares | Live |
| ROYAL CASTLE WINE LIMITED | Private company limited by shares | Dissolved |
| ROYCE CASTLE LIMITED | Private company limited by shares | Dissolved |
| RUBY CASTLE COMPANY LIMITED | Private company limited by shares | Dissolved |
| CASTLE SAFE LIMITED | Private company limited by shares | Live |
| SAFETY CASTLE ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| CASTLE SEAFOOD COMPANY LIMITED | Private company limited by shares | Live |
| CASTLE SECURITY SYSTEM LIMITED | Private company limited by shares | Live |
| Castle Service Limited | Private company limited by shares | Live |
| SHEEN CASTLE LIMITED | Private company limited by shares | Dissolved |
| SHEEN CASTLE LIMITED | Private company limited by shares | Live |
| SILVER CASTLE LIMITED | Private company limited by shares | Dissolved |
| SILVER CASTLE LIMITED | Private company limited by shares | Dissolved |
| SILVER CASTLE LIMITED | Private company limited by shares | Live |
| SILVER CASTLE INVESTMENTS LIMITED | Private company limited by shares | Live |
| SINOCHARM CASTLE LIMITED | Private company limited by shares | Live |
| SINOCHARM CASTLE ENTERPRISES LIMITED | Private company limited by shares | Live |
| SINOCHARM CASTLE INVESTMENT LIMITED | Private company limited by shares | Live |
| SINOCHARM CASTLE TRADING LIMITED | Private company limited by shares | Live |
| SMART CASTLE LIMITED | Private company limited by shares | Dissolved |
| CASTLE SMART LIMITED | Private company limited by shares | Dissolved |
| SMART CASTLE LIMITED | Private company limited by shares | Dissolved |
| CASTLE SMART LIMITED | Private company limited by shares | Live |
| SMART CASTLE LIMITED | Private company limited by shares | Live |
| SMARTY CASTLE LIMITED | Private company limited by shares | Live |
| SOLAR CASTLE LIMITED | Private company limited by shares | Live |
| Soul Castle Company Limited | | Live |
| SOUTH CASTLE LIMITED | Private company limited by shares | Live |
| CASTLE SOUTH LIMITED | Private company limited by shares | Dissolved |
| SPEED CASTLE LIMITED | Private company limited by shares | Live |
| SPLENDID CASTLE COMPANY LIMITED | Private company limited by shares | Dissolved |
| STABLE CASTLE LIMITED | Private company limited by shares | Live |