I found this minute insect on my bathroom tiles. It was only a couple of mm long but on enlarging the photos, and taking away the acres of tiles (my zoom is playing up so these were the best I could manage) it looks like some kind of beetle to me.
They look like booklice to me even though the image quality would need to be better to know for sure. The overall shape and size and the little else I can see make me 90% sure.
Thank you very much. I
looked up some pics of booklice and thy do look like the one I saw. I've only ever noticed booklice on books before. This one also looks darker, so probably a different species. They apparently feed on fungi and I've had some trouble with black mould in the bathroom and its due for another clean (careful use of toilet bleach seems the best way of removing it).