| JAMM LIMITED | | Live |
| JAMM Group Limited | Private company limited by shares | Dissolved |
| JAMM Investment & Consultancy Group Limited | Private company limited by shares | Live |
| JAMM INVESTMENT HOLDING LIMITED | Private company limited by shares | Live |
| JAMMA TECHNOLOGY LIMITED | | Live |
| Jammar Limited | Private company limited by shares | Dissolved |
| JAMMEX LIMITED | Private company limited by shares | Live |
| JAMMIN GLOBAL ADVENTURES LIMITED | Private company limited by shares | Live |
| Oil Jamming Limited | Private company limited by shares | Live |
| Gift Jamming Limited | Private company limited by shares | Live |
| INFINITY JAMMING LIMITED | Private company limited by shares | Dissolved |
| JAMMING INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Jammitt Limited | Private company limited by shares | Live |
| JAMMU COMPANY LIMITED | Private company limited by shares | Dissolved |
| JAMMY LIMITED | Private company limited by shares | Dissolved |
| Jammy Ads Limited | Private company limited by shares | Live |
| JAMMY BEAUTY LIMITED | Private company limited by shares | Live |
| Jammymag Magnets Limited | Private company limited by shares | Live |