Bristan cartridge was an Instant fix!
Showerdoc Reply:
The only time you really need to replace the seals on this cartridge is if one of the seals is buckled, split, very worn or damaged.
Normally if the shower is leaking through the front of the spindle/valve,you are experiencing temperature problems or the valve is stiff to operate then a new cartridge 06732COMPL (Cart5) will be needed.
If after purchasing a shower cartridge it becomes faulty within the 1 years warranty, then please make sure you contact us to so we can work out if you have issues out with the shower or so we can send out a replacement.