Any plumbers about? Our bathroom sink hot tap has decided to exhibit what I believe the medics would call 'poor flow'. It reduces from an unimpressive trickle when full on to a bare dribble after about 10 seconds. No spluttering at all, but I tried the 'hosepipe to the mains cold tap and backwards flush' technique anyway just in case it was an airlock. Flow seemed better for about 30 seconds, then dried up again. It might be my imagination, but the tap doesn't seem to turn as far as it used to either. Other hot taps around the house work fine. Am I looking at a problem in the tap itself?