The left knob is the hot one, and earlier this week I was turning the knob to turn the tap on and heard like a click/snap, Its like something snapped inside the knob, and now the knob is sort of loose when I turn, so of course I havent used it, so was boiling kettle for hot water till I got it fixed.
Blow me, now the right one (cold) has gone just now, exactly the same as the hot tap.
I was going out anyway to buy washers thinking I will change the washer on the original hot one, but now after the cold knob has gone the same, is it the washer, cartridge or something else?

gracey, June 2010

Its more than likely that the tap cartridges need replacing. The ceramic insides have cracked and the only way to cure it is to replace the complete cartridge as there are no washers to replace on this type of tap valve. Ideally you need to know the make and model of the tap as there are numerous cartridges and they are not all interchangeable. Your best bet is to consult a plumbing merchants.

Marko, June 2010

sounds like you have broken the plastic inserts in the tap knobs.

hi-spec plumbing & heating (essex), June 2010