An old school mate suggested a different approach and I have found the answer. Turns out is a MAMOLI 7095 valve made in Italy and there are a couple of UK suppliers. Price for a pair of hot&cold valve inserts is £20 so they are on order.
IMG_5121-Optimized-Optimized.JPG Our ceramic mixer tap in the kitchen has started dripping and the usual sellers do not seem to list anything to match it for spares. It came with a Kitchens Direct kitchen about 10 years ago and is described on the invoice as a Tecnik 7095 Quarter Turn Monobloc Mixe...