11.30 last night: noticed that the cistern in the downstairs loo was overflowing. The overflow pipe was leaking, which is how I spotted it. Took emergency precautions and went to bed.
9.00 a.m.: called Homecare. They answered after one ring. Booked an 'all day' callout (i.e. by 6.00 p.m.) for today.
9.05: Matt the plumber phoned. He'll be with me in 10 minutes.
9.10: Matt rings the doorbell.
9.40: Matt leaves. Problem fixed.
* Now now, keep it clean...