I found some Mitchum SmartSolid deodorant at Tesco. The shelves were marked up with tickets for the roll on and aerosols for £3.50 for 2. There were a couple of the sticks on a shelf nearby, with no price ticket. I checked at the till and they went through at 71p each. The receipt only said "Deodorant". I don't know if its only for this store.
I like the way that these don't reek of perfume, they don't leave white marks on my clothes and they don't feel sticky like a roll on.
The RRP is ~£3. Boots had them for £2 http://www.hotukdeals.com/item/583618/mitchum-smart-solid-anti-perspirant.
Two for £3.50 is quite a common price. Apparently Poundland is selling some Mitchum stuff http://www.hotukdeals.com/item/583661/mitchum-aerosol-deodorant-1-pounlan