Two thirds the way through my shower this morning and it stopped! Quick call to Screwfix and "Yes! That's an essential repair job-click and collect". All ready for me, usual journey time 45 minutes, to day at speed limits, 20 minutes! "Is this compatible with the old model?" "Yes". After redrilling and plugging all but one of the fixings and having to move the new head fixings over (more drilling and pluggiing-filling old holes), job done! Ahh! Where's the teapot! Thank you for all those folks working and for all those folks who stayed at home to make my journey time shorter! Stay safe and clean folks!