7dayshop.com has this Charger Kit with 4 x AA 700mAh Ni-Cd Batteries for £3.99
700mAh is good enough for Kids toys or similar applications. This wont be suitable for digital cameras or any power-hugry devices.
Delivery is £3.95 extra !
PS: If you need 2100mAh batteries (suitable for digital cameras), better buy the Argos / Play.com deal, posted in the comments!