I managed to wear down groove in the screw with a penknife. I got enough grip to loosen it about a milimetre or two at a time (discovering that if you tighten then untighten continually it seems to help). It took an age to do it, but the tap is free at last!!
I just wanted to say thanks to...
My hot water tap leaks and I want to change the washer but I can't undo the retaining screw on the tap head. When I tried to turn it, the screw head seemed "soft" and it kind of collapsed. It's now impossible to get a strong enough grip with the screwdriver. Is there a tip for removing the...