Great, thank you for all the responses so far!
@cordeliaflynne I feel your partners pain. I love mackerel, but not that much!
Not veggie, no. Will look into the Quorn bits and maybe some low fat sausages.
@Ricekrispie22 tofu scramble sounds interesting but I've always chickened out of cooking it. Do you need to marinade it for ages so it tastes ok? Did you use hard or silken tofu?
Thanks @bastardkitty - the first response in particular made me chuckle (though I appreciate all the replies!). I am mainly allergic to tree nuts, can tolerate a few peanuts but have tried a few natural ones which gave me a dodgy tummy. I do actually have some sunflower seed butter in the cupboard so I may try that in porridge. Not allergic to sesame either so will try and incorporate some hummus in somewhere.
A prime example is this morning - day off so I cooked mushrooms, tomato, sweet potato with onion and garlic and half a tin of beans for protein. Was lovely and low calorie but I was hank marvin' again by 12. It's that second bit of protein that's lacking... (Also would have had toast with it but no bread.)
Thanks again folks, keep em coming!