We were somewhere around Barstow, on the edge of the desert, when the
drugs began to take hold. I remember saying
something like:

Hello I have the same problem of dripping kitchen tap with ceramic discs and
quarter turn monobloc mixer tap from screwfix.
Did you get any useful replies as I am at a loss as well.
thanks.

Go into any decent plumbing suppliers and get a replacement spindle
assembly - they're fairly universal. Take the old top half of the tap
with you to check it will fit, to save a double trip.