| SY&K Consulting Limited | Private company limited by shares | Live |
| SYKAM (HK) SCIENTIFIC INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| SYKATON REAL ESTATE & TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| SYKCHT LIMITED | Private company limited by shares | Live |
| SYKED LIMITED | Private company limited by shares | Dissolved |
| SYKELAY COMPANY LIMITED | Private company limited by shares | Dissolved |
| E. D. SYKES AND COMPANY, LIMITED | Private company limited by shares | Dissolved |
| SYKES COMPANY LIMITED | Private company limited by shares | Dissolved |
| SYKES INVESTMENT LIMITED | Private company limited by shares | Live |
| SYKES PUMPS LIMITED | Private company limited by shares | Dissolved |
| SHENZHEN SYKJ LIMITED | Private company limited by shares | Live |
| SYKL OF LIFE CHARITY FOUNDATION LIMITED | Company limited by guarantee | Live |
| SYKLON Technology Co., Limited | Private company limited by shares | Live |
| SYKO DESIGN LIMITED | Private company limited by shares | Dissolved |
| Sykon China Doors And Windows Curtain Wall System Co., Limited | Private company limited by shares | Live |
| SYKOO TECHNOLOGY (SHENZHEN) CO., LIMITED | Private company limited by shares | Dissolved |
| SYKT HOLDING LIMITED | Private company limited by shares | Live |