I'm not a plumber, but I think Fluffyteddy was ripped off. The water pressure in (most)(British) houses is not caused by a pump. There is simply a water tower somewhere in the vicinity that creates a 'head' of pressure - in the cold water supply. Again in most British houses, the hot water pressure is derived from the water tank in the loft - which is not usually enough for a decent shower in an upstairs room. If the pressure was too high, it could be reduced by partially closing the stop-**** - by the way, that's what catweasle means when he says 'turn the water off', i.e. turn the stop-**** off where the cold water enters the house (often under the kitchen sink). The fact that you have a mixer tap that is dripping could cause a bit of difficulty, as I've never seen a diagram of 'How to Change a Washer' that features a mixer tap.