Excuse my ignorance but do you train? If so for what goals and how?
Whats Steven had put would be good for someone wanting fairly lean muscle gains that wasn't an ectomorph. However at 9 and a half stone I think you should just eat whatever you can. You need the dirty carbs in there too or you will never gain or hold size. Just be mindful of fat gain, if it happens. As long as you are getting in plenty of protein you should be good to go for muscle.