The utterly delicious Yeo Valley yoghurt is £1.50 at Tesco. There's a 50p off coupon in the January Tesco mag, and 6 claims available for 50p cashback on checkoutsmart. Also an additional claim on Clicksnap.
Yeo Valley Yoghurt, 500g, £1.50 at Tesco, 50p after coupon and cashback. ( 7x claims available)