Thanks for the handy FB group, that looks really useful!
We have soup, bread & cheese one night every week. We used to have a supermarket soup from the refrigerator, but we've started making our own instead.
Me and DH take turns making it at a weekend, we make enough for 2 or 3 weeks' worth, portion it out and freeze it.
Works really well and it's fun to try different recipes.
I also batch cook things like chilli, stews etc. and freeze them.
Snack on fruit and nuts rather than cereal bars etc.
There are some changes which are really easy to make, although it's hard to completely cut out UPF's, just reducing them is going to do you a lot of good.