Long time sufferer here too ImaHogg so I am also interested in the replies.
I have never been 'cured' but I have better phases and then awful phases. I am in an awful phase right now. Although I know it is partly stress related, I am very food affected. I know I am having a flare up now as I dared to eat something different..... (I got one of the meal kits and ate things i dont normally like chickpeas and spelt).
When I wake up I don't know if I will be having a IBSD or a IBSC day, so I am mixed like you. Over the years I have established what my triggers are, but this is different for everyone. I was awful on the fodmap diet so that doesn't work for all.
Sometimes it is so bad, that I just don't eat. Feeling hungry and weak beats the pain that I have sometimes. It is really not ideal and I can lose 2 - 3 kgs in a week when I get like that.
I think being strict with triggers is key imo. I do take meds for mine ( I am not in UK so not sure if avail to you) I take Librax at night, but try not to take them all the time, Iberogast drops, and Colofac every now and then. I also have some chews that I bought when I was in the USA on holiday, they are just called gas relief
. I will check the ingredients later if you like.
I am also hoping someone comes along with a magic cure.
My triggers:
Wheat, dairy, raw onions but now also cooked, tomatoes, bananas, anything flavoured ie crisps, anything with skin on, apples, plums, nectarines, and now spelt and chickpeas as I just never dared to try them before, I wont be again..... There are more but those are ones off the top of my head.