If you have a lidl nearby, then ours certainly has 500g packs of mince for £1 this weekend (half price offer) which might help you out? Lots of scope for bolognaise, lasagne, chilli (but not hot), cottage pie, hm meatballs, burgers.
My recent discovery is how far mince stretches if you lob in a good handful of porridge oats when browning the mince, and loads of finely grated carrots. The oats make the sauce really rich and creamy but totally break down and the carrots disappear too.
Have a look at Cheap family recipes and A girl called jack for meal inspiration. Also the Money saving expert old style forums have lots of posters who manage on exactly this sort of budget so you could either read old threads or post for help.
I think you will struggle to have a meat centric diet to be honest, but if you can get away with token amounts of smoked bacon/smoked fish (ie the highly flavoured meats) to "meat up" a meal you might have a bit more luck. eg a pea and onion risotto with a sprinkling of crispy fried bacon over the top/mixed through it, or the same but with some smoked mackerel flaked in.
Chop up meat, ie small dice chicken bits or cut sausages into 6 or 7 pieces so it looks like more and you can get away with less of the expensive ingredient.
Save all bones and brew them up for ages in a pan of boiling water with any herbs/veg peelings & ends/dash L&P if available and you will have a rich lovely stock that will add a lot of body and flavour and "meaty feel" to meals. I do this, then simply cube and fry any of onion, carrot, swede, leek, parsnip, celery and once they are golden, pour the stock over, put a lid on and simmer til the veg are nearly done, add a pile of shredded savoy, simmer for another 5 mins, and serve. I usually also boil some pearl barley in the stock for half an hour first and that all goes in, so you get a very delicious barley and root veg stew, to have with fresh bread. If you have any leftover bits of meat from the bones then put it in. If I don't, I will often add a handful of dark lentils to the barley (the type that stay whole) for protein, but if that's not your thing, you could have a bit of cheese with the bread instead.
If you add a bit of english mustard to cheese sauces it brings out the flavour of the cheese and you can use a bit less.
I am having success making my own bread rolls with bog standard plain flour instead of bread flour - much cheaper. I will try a full loaf soon.
Lidl/Aldi/Iceland are cheap for eggs & milk - £1 for 4 pints, and £1 for 6 free range eggs, and cheaper battery eggs if free range is not affordable and you are willing to make that compromise.
I would stick to meat once a day and keep breakfasts and lunches veggie for costs sake. Beans/eggs/cheese on toast are fine lunches if you're at home. As are pitta pizzas, pasta with peas and cheesey sauce, veg omelettes, homemade pancakes, jacket spuds.
Homemade porridge is probably your cheapest breakfast bet, or the aforementioned beans/eggs on toast, or peanut butter on toast/sandwich
Frozen veg will save you a lot of money. I can vouch for peas, sweetcorn, broad beans, sprouts, spinach, green beans all being fine. Haven't tried frozen broccoli & cauliflower but I would think in a pastabake/cauli cheese etc they would be fine. Stick to the onions, carrots, cabbage, swede etc type cheap stuff for fresh. Similarly there is nothing wrong with apples & bananas and some tinned value peaches if that's all your budget runs to. Iceland currently selling big bags of 21 braeburns for £2 which is a BARGAIN.
Good luck.