| OCEAN UNION LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL DATA WAREHOUSING LIMITED | Private company limited by shares | Dissolved |
| UNION TARGET INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION HOPE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNI-POINT ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL SYSTEMS TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| UNION CAPITAL (H.K.) LIMITED | Private company limited by shares | Live |
| UNIANCHOR LIMITED | Private company limited by shares | Dissolved |
| UNION 2000 LIMITED | Private company limited by shares | Live |
| UNION ART CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL TRADE LIMITED | Private company limited by shares | Dissolved |
| UNION BUILDERS AND ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNION STAR CORPORATION LIMITED | Private company limited by shares | Live |
| UNISON TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNITED CREATION LIMITED | Private company limited by shares | Dissolved |
| UNISON WATCH LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL ORIENTAL MAX CO. LIMITED | Private company limited by shares | Live |
| ASIAN UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| CRANFIELD UNIVERSITY ALUMNI ASSOCIATION LIMITED | Company limited by guarantee | Live |
| UNIVERSAL WISDOM LIMITED | Private company limited by shares | Dissolved |
| UNION TIDE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION FIELD INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| NEW UNIVERSE INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITED SENSE INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNIVERSE INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITED SUN ENTERPRISE LIMITED | Private company limited by shares | Live |
| UNITED WINNING LIMITED | Private company limited by shares | Dissolved |
| UNION GREAT TRADING LIMITED | Private company limited by shares | Dissolved |
| HARVEST UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| GREAT UNION PAPER COMPANY LIMITED | Private company limited by shares | Live |
| UNION FAITH INSURANCE ADVISOR LIMITED | Private company limited by shares | Live |
| GIANT UNION COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| ORIENTAL UNION TOBACCO COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION TEXTILE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SUN UNION ENVIRONMENTAL PACKAGING TECHNOLOGY LIMITED | Private company limited by shares | Live |
| UNIVERSAL TIME INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| CENTRAL UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNITECH NETWORKS LIMITED | Private company limited by shares | Dissolved |
| HONOUR UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| GOLDEN UNION SHIPPING LIMITED | Private company limited by shares | Live |
| UNION COPYING CO., LIMITED | Private company limited by shares | Dissolved |
| KAM WO UNIFORM LIMITED | Private company limited by shares | Dissolved |
| CROWN UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| GOLD UNION CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNION RESOURCE HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION (HONG KONG) METAL PRODUCTS LIMITED | Private company limited by shares | Live |
| HONEST UNION LIMITED | Private company limited by shares | Dissolved |
| ALLIED UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION ASIA COMMERCE LIMITED | Private company limited by shares | Dissolved |
| UNION YORK LIMITED | Private company limited by shares | Dissolved |
| UNIWEALTH MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| UNIDON LIMITED | Private company limited by shares | Dissolved |
| UNITED UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| REGENT UNIVERSE LIMITED | Private company limited by shares | Dissolved |
| OCEAN UNION TRANSPORTATION TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION KING ENGINEERING LIMITED | Private company limited by shares | Live |
| CHEER UNISON LIMITED | Private company limited by shares | Dissolved |
| UNITED RICH TRANSPORTATION LIMITED | Private company limited by shares | Dissolved |
| TIME UNITED LIMITED | Private company limited by shares | Live |
| RICH UNITED INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNION STANDARD LIMITED | Private company limited by shares | Dissolved |
| UNITED CREATION ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| UNIQUE ACE LIMITED | Private company limited by shares | Dissolved |
| GREAT UNION HANDBAGS LIMITED | Private company limited by shares | Dissolved |
| UNION WELCOME INVESTMENTS LIMITED | Private company limited by shares | Live Commenced dormancy on 29-Apr-2016 |
| LINK UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| UNITED FORTUNE LIMITED | Private company limited by shares | Dissolved |
| DESIGN UNION LIMITED | Private company limited by shares | Live |
| UNIC GROUP (H.K.) LIMITED | Private company limited by shares | Live |
| UNIPRINTS COMPANY LIMITED | Private company limited by shares | Dissolved |
| SMART UNION (HONG KONG) LIMITED | Private company limited by shares | Live |
| UNIONFIT LIMITED | Private company limited by shares | Dissolved |
| UNION YEAR LIMITED | Private company limited by shares | Dissolved |
| NICE UNION LIMITED | Private company limited by shares | Dissolved |
| FAMOUS UNION LIMITED | Private company limited by shares | Dissolved |
| DRAGON UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNITY POWER ASSOCIATION LIMITED | Private company limited by shares | Dissolved |
| ASIAN UNIVERSE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| FAITH UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION CHINA TRADING LIMITED | Private company limited by shares | Dissolved |
| UNITED VIEW INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| TECH UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED FOCUS LIMITED | Private company limited by shares | Live |
| NEW UNITY ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| RICH UNITED ENTERPRISES LIMITED | Private company limited by shares | Live |
| NEW UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNIONMAX ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| HONG KONG WORLD UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| RICH UNION (FAR EAST) LIMITED | Private company limited by shares | Live |
| UNION EAGLE LIMITED | Private company limited by shares | Live |
| UNI-SMART INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| Sun Union Assets Management Limited | Private company limited by shares | Live |
| TAYLOR TECH UNION LIMITED | Private company limited by shares | Live |
| UNIVERSAL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| CANTON UNION LIMITED | Private company limited by shares | Dissolved |
| UNIQUE DESIGN GALLERY LIMITED | Private company limited by shares | Live |
| CENTURY UNION CONSULTANTS (TRANSCRIPT) LIMITED | Private company limited by shares | Dissolved |
| HONOUR UNION CREATION LIMITED | Private company limited by shares | Dissolved |
| UNITED CONCORD INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| MASS UNITED INVESTMENTS LIMITED | Private company limited by shares | Dissolved |