Philips Sonicare HX6511 EasyClean Rechargeable Toothbrush for £7.99 (was £83.49*) @ Superdrug (instore)
* Massive, massive pinch of salt on the 'was' price, but still a huge bargain at £7.99 (£43.89 on Amazon). Got this today at Superdrug in Kirkintilloch (nr Glasgow).
Showing at same price, but out of stock online, so I would imagine this is only available while stocks last in store. You can ask them to email you when the product is back in stock. Must be worth a try.