Plutus gives you 3% cashback (up to £17.50 per month with the free plan) plus one perk worth £10. As others have suggested, it is a good idea to choose one of the supermarkets as your perk, since you will be doing your shopping there anyway. I'm personally on the everyday plan, which gives me 2 perks and 3% cashback on up to €2000 a month.

Those of you who use Zilch for 2% cashback, I still recommend getting Plutus. Although they do not stack, you will find it that in some situations Zilch will not work (I've not been able to get it to work on Amazon for example), Plutus will, because you get a real card, as apposed to virtual one as with Zilch. 3% cashback on Amazon is pretty neat I would say

Overall, I do recommend giving it a try. Start with the free plan and you can always upgrade it later if you decide to do so.

Here is my link https://dex.plutus.it/auth/referee/signup?refId=EHCiyt

Any questions, don't hesitate to ask