From Amazon
Triton Showers T80 Easi Fit Plus DuElec™ | Shower Electric | 10.5 KW I White I Electrical Showers | with Rainfall Showerhead and Anti Twist Hose | Best Electric Shower Units for Bathrooms
Wickes
Triton T80 Easi-Fit+ DuElec™ Electric Shower - 10.5kW - White/Chrome