Kemble Water Limited is wholly owned by Kemble Water Holdings Limited, which itself is owned by a consortium of investors, primarily institutional shareholders such as pension funds and sovereign wealth funds[1].[3] Entities managed by the Macquarie Group have historically been significant stakeholders, with around a 47.65% stake at one point (via Kemble Water International Holdings Limited), though over time, some interests have been sold to other institutional investors[1].
This consortium primarily comprises large pension funds and long-term institutional investors from Europe, Canada, and Australia[1]. The ownership structure is designed to support the regulation and financing of the underlying utility company, Thames Water Utilities Limited, which operates water and wastewater services in London and the Thames Valley[3].
As of recent documentation, OMERS (Ontario Municipal Employees Retirement System) Farmoor SGP LP is one of the largest shareholders in Kemble Water Holdings Limited with a stake of about 21.9%[5].