Details of the group's subsidiary undertakings, joint ventures and associates are set out below. Unless otherwise specified, the registered address for each entity is Haweswater House, Lingley Mere Business Park, Lingley Green Avenue, Great Sankey, Warrington, WA5 3LP, United Kingdom. For further details of joint ventures and associates please see notes 12 and 13.
|Class of share capital held||Proportion of share capital owned/voting rights %*||Nature of business|
|Halkyn District Mines Drainage Company Limited||Ordinary||99.9||Dormant|
|North West Water International Limited||Ordinary||100.0||Holding company for international business|
|North West Water Limited||Ordinary||100.0||Dormant|
|United Utilities (Overseas Holdings) Limited||Ordinary||100.0||Holding company|
|United Utilities Energy Limited||Ordinary||100.0||Energy generation|
|United Utilities Healthcare Trustee Limited||Ordinary||100.0||Corporate trustee|
|United Utilities International Limited||Ordinary||100.0||Consulting services and project management|
|United Utilities North West Limited||Ordinary||100.0||Holding company|
|United Utilities Operational Services Limited||Ordinary||100.0||Operations and maintenance contract holder|
|United Utilities Pensions Trustees Limited||Ordinary||100.0||Corporate trustee|
|United Utilities PLC||Ordinary||100.0||Holding and management company|
|United Utilities Property Services Limited||Ordinary||100.0||Property management|
|United Utilities Renewable Energy Limited||Ordinary||100.0||Renewable energy generation|
|United Utilities Total Solutions Limited||Ordinary||100.0||Water and wastewater services|
|United Utilities Utility Solutions (Industrial) Limited||Ordinary||100.0||Holding company|
|United Utilities Utility Solutions Holdings Limited||Ordinary||100.0||Holding company|
|United Utilities Water Finance PLC||Ordinary||100.0||Financing company|
|United Utilities Water Limited||Ordinary||100.0||Water and wastewater services|
|United Utilities Water Operations Holdings Limited||Ordinary||100.0||Holding company|
|UU (ESPS) Pension Trustee Limited||Ordinary||100.0||Corporate trustee|
|UU Group Limited||Ordinary||100.0||Dormant|
|UU Secretariat Limited||Ordinary||100.0||Dormant|
|YCL Transport Limited||Ordinary||100.0||Non-trading|
|United Utilities Bioresources Limited||Ordinary||100.0||Wastewater services|
|United Utilities (Tallinn) BV||Ordinary||100.0||Holding company|
|Manta Management Services Limited(1)||Ordinary||49.0||Management company|
|Water Resources Limited(1)||Ordinary||100.0||Non-trading|
|Lingley Mere Business Park Development Company Limited||Ordinary||50.0||Development company|
|Lingley Mere Management Company Limited||Ordinary||50.0||Property management|
|Selectusonline Limited||Ordinary||16.7||Procurement portal|
|Water Plus Group Limited(2)||Ordinary||50.0||Holding company|
|AS Tallinna Vesi(3)||Ordinary||35.3||Water and wastewater services|
|Muharraq STP Company BSC(c)(4)||Ordinary||20.0||Project company|
|Muharraq Wastewater Services Company WLL(4)||Ordinary||35.0||Operations and maintenance company|
|Jebel Ali Free Zone, Dubai, UAE|
|Muharraq Holding Company 1 Limited(5)||Ordinary||20.0||Holding company|
* With the exception of United Utilities PLC, shares are held by subsidiary undertakings rather than directly by United Utilities Group PLC.
- Registered address: 4th Floor, Iyara Building Room 405, 2/22 Chan Road, Thung Wat Don Sub-district, Sathon District, Bangkok, 10120 Thailand.
- Registered address: Two Smithfield, Leonard Coates Way, Stoke-on-Trent, United Kingdom, ST1 4FD.
- Registered address: Adala 10, Tallinn 10614, Estonia.
- Registered address: Building 200, Road 13, Block 115, Hidd, Kingdom of Bahrain.
- Registered address: Al Tamimi & Company, 9th Floor, Dubai World Trade Centre, Sheikh Zayed Road, Dubai, United Arab Emirates.