The plumber is here right now. Our shower has been going hot and cold for sometime now. Peter is a retired plumber who is out of retirement. I trust his diagnostic skills, he says it has something to do with the thermostat on the combi-boiler, or it could be the low pressure from the town water, or it could be our thermostatic shower has 'packed up'.
He's off to order some washers and he'll be back next week.
