What UK water company is listed among the big-name customers of the Polyhedra database management system?
Polyhedra DBMS:  Polyhedra is targeted primarily for embedded use by Original Equipment Manufacturers (OEMs), and big-name customers include Ericsson, ABB, Emerson, Lockheed Martin, United Utilities and Siemens AG. United Utilities: United Utilities Group PLC (UU), the United Kingdom's largest listed water company, was founded in 1995 as a result of the merger of North West Water and NORWEB.
United Utilities Group PLC