Just seen these beers in my local Tesco Metro in Macclesfield. My other half has coeliac disease so we always wander down the gluten/wheat free section and I saw these.
These are never on sale and are always £2.50 plus in Tesco or Sainsburys.
Here is a link to the brewer's website - http://www.hambletonales.co.uk/gfa.htm
This would be a cracking deal even if it wasn't for gluten free beer/lager at £.063 for 500ml. Fantastic price. Plus they actually taste very nice as she has tried them and reckoned they don't taste any different to normal bottled beers. Best before 11/12 for the lager and 03/13 for the bitter.
No idea if this is nationwide just in case anyone asks :-)
They also had a number of other gluten and wheat free stuff on offer like seed bars down from £2 to 40p.