Another glitch from Tesco, buy two or four, six etc of the packs of chicken along with a couple of other things (found this helps at CS) and go to self scan. I got charged full price with no BOGOF. Take your receipt to Cutomer Service and point this out and you will get doudle the difference refunded.
ie. I bought 4 packs and got charged £24, got a refund of £24 and my Chicken for free.
Barcode No : 5052319292800