Aaron PEACOCK
Hi Darren if you have a vented system with a cold water storage tank in the property and there is only cold water coming from your kitchen tap symptoms have the making of an air lock some ware in the system. If you have a mixer tap in the kitchen try opening the hot tap hold your hand over the outlet and slowly turn the cold outlet on do this for about 30 seconds. This will push water back up the pipe and can push the trapped air out at the tank you will hear it happen. Hope this helps. Thanks A.