York: Fix a leaky bathroom basin mixer tap (ended)

Fix a leaky bathroom basin mixer tap

I have a bathroom basin mixer tap with one handle and no obvious way of getting inside. Water has started dripping from the handle. The only complication here (as opposed to a standard job) is that the plumbing is behind some boxing under the sink, which can only be removed if the drainage pipe work from the sink is first dismantled. I have an additional plumbing job, which is to determine the cause of, and preferably fix, a cold upstairs radiator. I suspect it has a broken valve.
Archive for Plumbers, Heating