Then, on the very day my wife declared that if we didn't see a newt she'd give up, we found the tiniest of tiny baby newts (okay, larvae). And then two more. These really are small: only just over a centimetre long, about the size of a 1p coin. They have little gills and four tiny legs. Awww.
I've no idea how many others there may be lurking in the depths of our small pond, or what the chances of them surviving are, but this is a very cool discovery.