leaking shower mixer tap?

Could be frost damage which has broken the cartridge - I had a similar problem with the tap on the kitchen sink in my motorhome. Was told new tap - £70.00 plus fitting but 5 minutes removing the cartridge and a visit to a plumbers merchant solved the problem. Remove the red/blue plastic insert to reove the top for which you need an allen key

Motorhomer from Wales
April 2009