I have decided that I don't buy food at Tesco as I buy everything else there - clothes, house stuff, presents and cards etc.
I think it's definitely a tricky one as the supermarkets have such a hold over us. I would like to buy at "independent" shops like we're always being told to but they're aren't any near me and it would mean my travelling miles in a car to find some.
Maybe worth challenging Tescos over stuff you don't like - as a regular customer you are valuable to them, they have to listen if enough customers make a fuss . . . I am the same with Amazon - feel I should support small bookshops, but such a good selection and sooo easy!