| Diamond To Buy Limited | Private company limited by shares | Live |
| Diamond Age Limited | Private company limited by shares | Live |
| DIAMOND TOP LIMITED | Private company limited by shares | Live |
| DIAMOND ONE HK CO LIMITED | Private company limited by shares | Live |
| DIAMOND ACE LIMITED | Private company limited by shares | Live |
| A Diamond Limited | Private company limited by shares | Live |
| V & S DIAMOND LIMITED | Private company limited by shares | Live |
| CVD DIAMOND LIMITED | Private company limited by shares | Live |
| Diamond ICQ Limited | Private company limited by shares | Live |
| DIAMOND MAX LIMITED | Private company limited by shares | Live |
| DIAMOND INC LIMITED | Private company limited by shares | Live |
| Diamond Jet Limited | Private company limited by shares | Live |
| DIAMOND ONE LIMITED | Private company limited by shares | Live |
| DIAMOND SEA LIMITED | Private company limited by shares | Live |
| MAX DIAMOND LIMITED | Private company limited by shares | Live |
| Diamond Mia Limited | Private company limited by shares | Live |
| 520 Diamond Limited | Private company limited by shares | Live |
| CVD DIAMOND USA LIMITED | Private company limited by shares | Live |
| H&A Diamond Limited | Private company limited by shares | Live |
| DIAMOND SKY LIMITED | Private company limited by shares | Live |
| Diamond Hut Limited | Private company limited by shares | Live |
| NEW DIAMOND LIMITED | Private company limited by shares | Live |
| ADD DIAMOND LIMITED | Private company limited by shares | Live |
| Diamond Gem Limited | Private company limited by shares | Live |
| S.T DIAMOND LIMITED | Private company limited by shares | Live |
| DI DEN DIAMOND LIMITED | | Live |
| A&H DIAMOND LIMITED | | Live |
| Art & Diamond Co. Limited | | Live |
| DIAMOND X LIMITED | | Live |
| SA Diamond Company Limited | | Live |
| One Diamond Company Limited | | Live |
| YW DIAMOND LIMITED | | Live |
| D.D DIAMOND COMPANY LIMITED | | Live |
| DIAMOND MAX LIMITED | | Live |
| ALL DIAMOND LIMITED | | Live |
| Diamond Gas Company Limited | | Live |
| RED DIAMOND COMPANY LIMITED | | Live |
| DIAMOND 44 LIMITED | | Live |
| Liz Diamond Limited | | Live |
| ABLE DIAMOND COMPANY LIMITED | Private company limited by shares | Dissolved |
| ABLE DIAMOND LIMITED | Private company limited by shares | Live |
| ADAMAN DIAMOND LIMITED | Private company limited by shares | Dissolved |
| AETERNA DIAMOND LIMITED | Private company limited by shares | Live |
| SOUTH AFRICA DIAMOND EXCHANGE LIMITED | Private company limited by shares | Live |
| DIAMOND MINE AGENTS LIMITED | Private company limited by shares | Dissolved |
| DIAMOND AGREE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Diamond Airlines Company Limited | Private company limited by shares | Live |
| Diamond Alignment Limited | Company limited by guarantee | Live |
| ALLIED DIAMOND LIMITED | | Live |
| ALSON DIAMOND COMPANY LIMITED | Private company limited by shares | Live |
| AMBITIOUS DIAMOND LIMITED | Private company limited by shares | Live |
| AMPLE DIAMOND LIMITED | Private company limited by shares | Live |
| DIAMOND WAH MEI AMUSEMENT ENTERPRISES COMPANY LIMITED | Private company limited by shares | Dissolved |
| ANAYA DIAMOND LIMITED | Private company limited by shares | Live |
| DIAMOND ANGEL LIMITED | Private company limited by shares | Live |
| DIAMOND ANNIVERSARY LIMITED | Private company limited by shares | Dissolved |
| Antonelli Diamond Brothers Limited | Private company limited by shares | Live |
| DIAMOND SKY GAS APPLIANCES LIMITED | Private company limited by shares | Live |
| Aprilshine Diamond Limited | | Live |
| AQUARIUS DIAMOND COMPANY LIMITED | Private company limited by shares | Live |
| DIAMOND ARCH LIMITED | Private company limited by shares | Live |
| DIAMOND ARTISTIC JEWELLERY LIMITED | Private company limited by shares | Live |
| JOEY & ASHLEY DIAMOND LIMITED | Private company limited by shares | Live |
| ASIA DIAMOND LIMITED | Private company limited by shares | Dissolved |
| DIAMOND ASIA LIMITED | Private company limited by shares | Live |
| ASIA DIAMOND COMPANY LIMITED | Private company limited by shares | Dissolved |
| ASIA DIAMOND LIMITED | Private company limited by shares | Live |
| DIAMOND ASIA HK LIMITED | | Live |
| DIAMOND AUDIO ASIA LIMITED | Private company limited by shares | Live |
| DIAMOND FORD (ASIA) LIMITED | Private company limited by shares | Live |
| GOLD DIAMOND ASIA LIMITED | Private company limited by shares | Live |
| Diamond Of Asia International Trading Import & Export Company Limited | Private company limited by shares | Live |
| Asian Diamond Company Limited | Private company limited by shares | Live |
| DIAMOND ASSET LIMITED | Private company limited by shares | Dissolved |
| DIAMOND ASSET LIMITED | Private company limited by shares | Live |
| DIAMOND ASSET INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| PACIFIC DIAMOND ASSETS LIMITED | Private company limited by shares | Dissolved |
| ASTM DIAMOND, LIMITED | Private company limited by shares | Live |
| Diamond Audio Limited | Private company limited by shares | Live |
| Diamond Avenue Limited | | Live |
| DIAMOND BANCORP COMPANY LIMITED | Private company limited by shares | Live |
| DIAMOND BARON LIMITED | Private company limited by shares | Dissolved |
| DIAMOND BASE LIMITED | Private company limited by shares | Dissolved |
| DIAMOND BASE LIMITED | Private company limited by shares | Live |
| Base Diamond Company Limited | Private company limited by shares | Live |
| DIAMOND BEACH LIMITED | Private company limited by shares | Live |
| DIAMOND BEAR LIMITED | Private company limited by shares | Live |
| BEAUTY DIAMOND COMPANY LIMITED | Private company limited by shares | Dissolved |
| Diamond Beauty Limited | Private company limited by shares | Live |
| Japan Glittering as a Diamond (International) Technology Beauty Limited | Private company limited by shares | Live |
| Pure Diamond Beauty Company Limited | Private company limited by shares | Live |
| HK DIAMOND WOMEN BEAUTY LIMITED | Private company limited by shares | Live |
| BENNY LAU DIAMOND JEWELLERY LIMITED | Private company limited by shares | Live |
| BEST DIAMOND COMPANY LIMITED | Private company limited by shares | Dissolved |
| BEST DIAMOND LIMITED | Private company limited by shares | Live Commenced dormancy on 29-Dec-2011 |
| DIAMOND BEST LIMITED | Private company limited by shares | Live |
| BEST DIAMOND LIMITED | Private company limited by shares | Live |
| Beyond Diamond Limited | Private company limited by shares | Live |
| BIRCH DIAMOND LIMITED | Private company limited by shares | Live |
| Black Diamond Limited | Private company limited by shares | Dissolved |