A consortium of Canadian and Kuwaiti investors has agreed to buy a minority stake in Britain's Thames Water from funds managed by Macquarie, ending the Australian group's 11-year investment in Britain's largest water firm. Canadian pension fund investor Borealis Infrastructure and the infrastructure investing arm of the Kuwait Investment Authority (KIA) are buying a 26% stake in Kemble Water Holdings, the holding company of Thames Water. Borealis, infrastructure investment manager for OMERS, the pension plan for Ontario's municipal employees, and Wren House Infrastructure Management, the infrastructure arm of KIA, said they had agreed to buy the stake from Macquarie Infrastructure & Real Assets.