I have a 2 year old Avondale Landranger 6400 and water has started flowing out of the shower handle (where you turn it on and adjust the temperature). It means that we can't use any other taps without water pouring out of the shower till we get it fixed and we are supposed to be going away in a week. Does anyone have any knowledge of this problem, or any ideas where I might be able to get hold of spare parts (I'm told that Avondale is closed for the next week!)?