Bulmers Orchard Pioneers Sarah's Red Apple Cider, 4-packs of 330ml cans are £1.99 in Home Bargains. This looks to be in-store only, I found them in the Leeds Merrion branch.
Very drinkable and normally positioned at the premium end of the market, these are based on the Katy apple. They actually taste like apples were involved in their making unlike a lot of mass-market ciders. IMO not quite as good as Weston's but way way cheaper.