| Company name | Reg. code |
|---|---|
| WESTKEY OÜ (former name Westkey UÜ) | 14380727 |
| WESTWAY OÜ | 11987311 |
| WESTSEA OÜ kustutatud | 11969678 |
| WESTMET OÜ (former name MIXEL OÜ) | 11504040 |
| WESTORY OÜ | 16550919 |
| WESTEN OÜ (former name Westen Service UÜ) | 14756227 |
| WESTEK OÜ | 12487444 |
| WESTVED TRADE OÜ | 16555266 |
| VIRU WESTTEN OÜ | 14008353 |
| WESTWAY INTERNATIONAL OÜ kustutatud | 14503302 |
| WESTWAY FINANCE OÜ (former name Westway Finance UÜ) | 12938254 |
| WESTWAY BUS OÜ | 11316953 |
| WESTREX TRADE OÜ | 10613815 |
| WESKE OÜ | 10385662 |
| WESTEN PROPERTY OÜ kustutatud (former name Westen Property UÜ) | 14246740 |
| WESTEN LAND OÜ | 12305012 |
| WESTEX TEAM OÜ kustutatud (former name Westex Team UÜ) | 12886233 |
| WESTEX INVEST OÜ | 12181129 |
| WESTEN GROUP OÜ | 14370924 |
| Q-WESTEX OÜ kustutatud | 11384038 |
| WESTER START OÜ | 10287072 |
| WESTEM EHITUSED OÜ kustutatud (former name HS Estate OÜ) | 16258918 |
| WESTER ENERGY OÜ | 14083544 |
| CHAPMAN AND WESLEY CONSULTING OÜ kustutatud | 17122233 |
| NETKEY OÜ (former name Netkey UÜ) | 12887617 |
| KATUSEUURINGUD OÜ (former name Westfly OÜ) | 16594958 |
| KRIMARE OÜ (former name Myliberty OÜ) | 14715866 |
| IKKUNAPOJAT OÜ (former name Funny Day OÜ) | 14212119 |