Found this on the Maplin's newsletter. I think it is available in the store too (save postage). Check it out.
Power Wireless Desktop Plus
Wireless keyboard and 800 dpi optical mouse in 1 box
Rechargeable mouse charger integrated into the wireless receiver
One-touch music, video and internet control on the keyboard
Horizontal and vertical wheel scrolling
PS/2 keyboard and PS/2 mouse
2-year manufacturer''s guarantee