Saw this one wandering on lid of compost bin. Only a millimetre or so across.
No interactions present.
Thanks, Alan. That photo at http://www.welokee.nl/spiders/en/showpic.php?pic=enopl1&find=2010-04-28-... does bear a spooky resemblance to my little fellow, Alan! How did you find it?
I had an idea that it was an immature Enoplognatha, so searched for exactly that in Google images. But, for all I know, immatures of some other spiders may have a similar pattern.
Lat/Lng: 52.061168, 1.159024
OS grid ref: TM166450