Reliance Worldwide Corporation (UK) Ltd (RWC UK) is a global provider of water control systems and plumbing solutions for domestic, commercial and industrial applications. Founded in 1949 the company originally focused on the design and manufacture of valves for the control of pressure, temperature and flow used in the installation of water heaters and water heating systems.

RWC UK operations opened in 1986 in Evesham, Worcestershire, UK to provide local European technical support and continued growth to the UK plumbing industry.