We may have found other answers which could help you.
Click here for Gainsborough Electric Shower
Gainsborough Impulse 9.5 electric shower?
Gainsborough shower?
what KW is my Gainsborough ps1200 power shower as I need to replace it? Any?
Gainsborough 8.5e ?
Gainsborough 2000x shower?
Gainsborough 2000x leaking from bottom of copper cylinder ?