For instance. Onken fat free strawberry yogurt has syns.
Sainsbury be good to yourself fat free is FREE It seems if it is fat free natural it should be ok.
Low fat Tesco is 5 syns 500g. Co-op 1.1/2 syns 500g
Tesco Everyday Value low fat nat yogurt is free 500g (if you can get it, my Tesco stopped doing it - shame it is only 45p.
Can`t find any others low fat that are free. Otherwide the syns really vsry/ Best look on line.