The 900 Watt BL470UK model is on clearance sale at Currys at the moment at a shade under £45. Comes with 500ml and 650ml containers, both with on-the-go sippie lids.
Stock will be store specific so pot luck as to how many are near you. I got the last one at my local (Aylesford) but can see that Sittingbourne still have stock.
I had intended to buy one of these at John Lewis at £65 so I was pretty pleased to stumble over this one.
Good luck all.