I did not realize this was a UK forum ... but I suspect water pipes get blocked the same way if stuff get into them, whether in Kentucky or UK ... so if you had ideas about such blockages in UK I would not have minded. And believe me, I would be very excited if it was loads of bourbon clogging...
The other day I noticed a sudden drop in water pressure in the kitchen. That was in the morning. In the same evening I noticed pressure loss in one my upsatairs bathrooms as well. The loss has continued to get worse, especially in the Kitchen. Some water outlets in the house are not...