Our Kitchen mixer tap has slowly over last 6 months started to take a few seconds before any hot water appears. It's not every day but today it took a full 10 seconds from switching the tap on to any hot water appearing. Rest of the house is absolutely fine for hot water taps and after it's had it's wobble it can be fine for days so wondering how to pinpoint where the issue is. The cold absolutely blasts out and the tap is a Bristan and only a couple of years old. We have a traditional gravity fed sytem for heating and water.
Any help greatly appreciated