Theridion blackwalli (male)
This prompted me to have a look for other arachnids, and I quickly found a couple on the same wall.
Tetranagtha sp. (female, probably T. montana) - one of the long-jawed orb-weaver spiders
No sooner had I walked back into the house when I noted another arachnid in the kitchen - albeit a spider that was one-leg short of a full set!
Philodromus dispar (male)