Hi
I've tried to cut back on groceries etc as my alreaey tight budget has been reduced yet further as Ex cannot work at the moment therefore no maintenance (as opposed to having to prise it out of him all month)
I keep track of everything I spend and basically buy nothing for myself apart from the odd bottle of wine at the weekend sigh.
We eat mainly homecooked food - packed lunches to nursery and to work for me and if we are out and about at the weekend so I never waste money on overpriced lunch time foods.
We don;t eat much meat at all as expensive but every month or so I will get some nice mince on special offer (two packs for £5 or so) and make one big pot of mince stuff for DS and some chilli bulked out with tons of veg for me then DS can have meat a coupel of times a week and I can have it once a week to keep up those iron stores!
Do you just have one child in nappies? £8 a week seems like a lot if so, perhaps try to buy nappies in bulk ( I can see that may not be possible in such a tight budget to get the £16 to buy the two big packs at once though) and join all the pampers, boots tesco clubs as they give you good money off vouchers and every penny counts!
I look out for the two loaves for £1.20, discounts etc etc. I only buy nicer stuff if it is on special offer such as apple juice etc.
I woudl have though that if your child has an allergy you could get milk on prescritpion. I have friends who are doctors and their daughter got non cow's milk formula on prescription so it must be possible (they also get her calpol in prescriotion so maybe you just need to know about it!)
The bottom line is that it is a v tight budget you are on, so all you can do is try as hard as possible to feed your children well on it. So unfair!