Ancala has agreed to buy South Downs Capital for an undisclosed sum. : Ancala Partners, the mid-market infrastructure investment manager, is buying Portsmouth Water for an undisclosed sum. Ancala said it has agreed to acquire South Downs Capital, the parent company of the UK water utility company in a deal expected to complete in March. Once completed, David Owens, an industry partner at Ancala and a former chief executive officer at Thames Water, will join the board of Portsmouth Water as a non-executive director.