Bit of a saga, but they've arrived.
Apparently the courier tried to deliver them (but didn't leave a card to say so), then returned them to the printers. So after contacting Keith Lawton (CTT head honcho), he sent them to my work address. They arrived whilst I was away in Lanzarote and were sitting in our post room (and nobody told me).
Anyway, I'll pop out to CSS on Saturday to flog them. £9 each.