The Duracell value charger provides good charging capability at an affordable price.
Typically charges in 6 hours (varies based on brand and capacity of battery). Charges AA and AAA rechargeable batteries Product Description Value charger recharges AA and AAA batteries.
Includes 4 AA 1700 mAh batteries.
Details here http://www1.duracell.com/uk/products-detail-valuecharger.aspx
I think this is a great price as they are far more expensive in Argos, and Tesco.