Discovered it was the hot outlet pipe in the kitchen near a vent from an ooutside wall between the combi and the first tap. Trained a fan heater on to the area and flow restarted.
I'm getting no water through my hot taps - one in the kitchen, two in the bathroom. Cold water taps OK. It's a ground floor flat. Heating is by a combi which does both the HW and CH systems. The Ch is working. When I turn on the cold water tap in the kitchen water flows from either of the bathroom t...