Just filled the water tank in preparation for our first outing this year, all good so far then a waterfall !! from the kitchen work top. a quick switch off of the water pump and mop up the mess.The Mixer tap leaking. Had a similar problem 10 years ago which cost me £59 for a new tap as I was told no serviceable parts ( a lie ) I have now found that replacement 35mm ceramic cartridges are available so Screwfix to the rescue @ £4.72 and ten minutes to change cartridge job done !