Went into Sainsburys, Brookwood today and they had the Oral B Professional Care 8500 Toothbrush for sale @ £17.12. They had 2 on the shelf and I bought one of them.
The cheapest elsewhere for this appears to be at argos which is for £34.23 which they state as being half price down from £68.49 so a great price from Sainburys.
It even comes with 3 heads!!