@Dinkiedoo I've posted on your other, more recent thread as well.
Looks to me like you're eating too many carbs, and not enough fat. And given that Second Nature promise fast weight loss, it's clearly not the approach for you.
You say you barely touch carbs, but you are!
Porridge, walnuts, gluten-free bread, pasta and strawberries (and veg) are all carbs and, together, mean you're probably eating more carbs than you need. The veg should stay as part of your diet, along with a few strawberries every now and then, but the rest you should probably ditch.
Are you being asked to eat low fat as well?
None of this is working for you!
You need to be low carb, medium protein and high fat.