I have recently (a month ago) gone dairy free as my ibs was really bad and it has helped, along with other things. I am finding that I have felt better in general without dairy so am going to continue. I will list some of the things that I have discovered that are dairy free and I would be really grateful if others can add to it so that anyone else who wants to try dairy free can see, because it's a minefield, there is milk in literally everything!
Also I find the actual dairy free versions of things can be a bit yuk and expensive and there are often other options, not listed as dairy free, that are anyway.
This is going to read like mostly sweet things, but I find they are the tricky things. Some of these things are not suitable for milk allergy as some products say may contain.
For spreading on toast, most sunflower spreads are dairy free, Flora etc but NOT Flora Buttery.
Lacto free cheese is amazing and I know its not dairy free but it's a rare treat for me.
Most own brand jaffa cakes are dairy free, but mcvities are not.
Ginger biscuits, fruit shortcake, rich tea, hobnobs and Oreo type biscuits are all dairy free.
Aldi dark chocolate digestives are currently dairy free.
As far as I'm aware, all Frys chocolate.
Soreen all types.
Most crisps that are not cheese flavoured are dairy free but you need to check because Walkers Sweet Chilli sensations do have milk in them.
I find oat milk the best, and for hot chocolate, Nesquik has no milk in.
I will add to as I remember, hoping others can too!