Logik Wireless Keyboard and Mouse in-store from PC World (or Currys PC World Megastore rather) - marked up on the shelf as £25 - scanned at £14.99!
Picked up from Currys PC World Megastore in Mile End. Possibly nationwide.
Will upload receipt if anyone wants.
Can't seem to find it on-line anywhere (Amazon etc) but if anyone's looking for a good value wireless keyboard/mouse that'll do a good job - this is my suggestion. Very comfortable to use, easy to get connected to the main unit - taking up just one USB port (and the main unit is quite small and flat as well - I've tucked it away behind the screen!)