Update

The bad news is:

David has broken his collarbone

The good news is:

The boiler, after its little rest, started working again properly. I booked the annual service (a couple of months early) this morning, so that I can get it checked out.

Very glad not to have to do emergency call-outs on a Bank Holiday weekend with a broken husband due home!

I was so happy to have David home, in one piece (relatively!), and to have the flat warm and the boiler working so he could have a hot bath to relax. And remove the dust!

Aaahh! So relieved it wasn't worse...