Just seen these in Pouindland in Stockport. I have bought these before for about £4 from high street chemists. They are excellent for blisters as they actually stay on for a few days and really do cushion the area.
They also have the invisible blister version too - pack of five.
They are currently on offer in Boots for £2.99 but are normally £3.99. So stock up on these while you can at this price.
Bit of blurb from the web:
Relieves blister pain instantly.
2nd Skin Technology.
When shoes rub, causing the first layer of skin to be removed and a blister to form, Compeed® acts like a second skin to:
Protect and cushion from rubbing to relieve blister pain instantly.
Repel water, dirt and germs to prevent infection.
Stay firmly in place for several days, allowing your skin to rapidly repair itself.
Compeed® - don't stop for a blister!
Compeed Blister Gel Plasters provide a natural pain relieving action on the blister to stop the pain instantly, and absorbs moisture from the skin to form a thick soft gel that ensures optimum cushioning from rubbing and pressure.The gel plaster repels water, dirt and bacteria and can stay firmly in place for up to 3 days.
Pic of receipt etc to follow.