Shop around - cleaning stuff is available from places like home bargains for less than a quid, for example.
Definitely!
Housebound at the moment and this has definitely increased my costs.
When I'm not I get cleaning and toiletry products from home bargains, Wilko, b&m, semi Chem, body care, pound shops etc
Does anyone have any veggie meal ideas that aren't using meat substitute and aren't just pasta and sauce?
Veggie 30+ years here there's LOADS
Have a browse online too.
Examples off top of my head:
Risotto (mushroom or pea are my favourites)
Vegetable tarts/pies (either bought or home made)
Omelette/frittata - stops you throwing out eggs too 
There's TONS of veggie curries/stews/casseroles/chilli you can do and these are great for the cook too as they're generally just a one pan job easy to do. Including bean stews, stroganoff, ghoulash... all sorts
Stir fries - I love a stir fry! Veggies that work great inc peppers, mushrooms, mange tout, baby corn, onion, celery, courgette, broccoli, beansprouts, you could even get in things like bamboo shoots and water chestnuts. I must admit I'm being lazy and using the ready made sachets at the moment but it's dead easy to make your own (it's just hard to do in small amounts it's only me at home now) either simply use soy sauce or sweet chilli sauce to season or make using soy sauce, honey, ginger, garlic, spices, ketchup... tons of recipes online
It's good just to get out of a rut too.
But may I ask why "not meat subs"? Cos I use those too and get on fine with them. I know not for everyone but curious what the issue is.
anything else I get is by memory or impulse which as I said in 1st post makes you a prime target for marketing!
I do my shopping lists by meal/category so:
Breakfast
Lunch - eg you note you have too many bread products likely due to lack of planning. You don't need bread, rolls, wraps and thins every week. I get bread every week (just a 400g loaf as it's only me) and occasionally get rolls/wraps/thins to ring the changes.
Dinner
Drinks
Snacks
Household
Toiletries
I have a running "template" list on my phone I go through when ordering each week (I shop online) so I don't forget stuff!
I agree with your sister it's daft to buy ready chopped chicken when you've a decent sized family who likely would manage the "mn chicken" idea.
My mum (from a VERY poor background where stretching food was essential) when we were all living at home would do:
A roast on the Sunday, usually but not always chicken. She'd use the slow cooker and said the meat would "fall off" the bones. She is an expert of getting every ounce off it I must admit, it's a skill but you can learn!
Then Monday would be a pie or casserole/stew made with the leftovers
Tuesday if there was any left (family of 5) she'd use for our packed lunches, while I'm veggie now I do have fond memories of leftover sandwiches - chicken with mayo and tomato, pork with thin slices of apple, beef with horseradish or gherkins.
Your nut understanding why you were spending so much is common, we're often too close to the situation to see it objectively. The frugal foodies posters have MASSIVELY helped me on that, I'd got into some bad habits too not only expensive but unhealthy.
I'm eating SO much better now and saving around £30 a week
Eggs last ages past the "best before" date. "Best before" merely refers to the product being at highest quality before that date. With eggs it means to me they're good for things you need the yolk to stay intact for - fried, soft boiled or poaching. After the best before they're still absolutely fine for ages for scrambled, omelettes, baking (you can use for AGES for baking), glazing etc
I have ocd and am VERY cautious on food safety (partly as I also have a stupidly sensitive stomach!) and I will happily use eggs 2-3 weeks past the best before
Friday - full breakfast for dinner
LOVE this! I'm a Scot so a glasgow fry is a huge thing culturally. I'm
Afraid does include meat subs but I love sometimes having:
Fried eggs, fried mushrooms, tattie scones, beans, veggie square sausage (seriously yummy!), veggie link sausage (Linda McCartney lincs are my favourite at the moment, most of that brands sausages are delicious, the originals ones work fantastic in my sausage and baked bean casserole which is one of my Omni dds favourite meals) and toast all washed down with a cracking mug of scottish blend "builders tea" or irn bru.