I've just totted up my average from January. It comes to £571 a month. I live alone but I am extravagant-ish this year, having been through several very tight years. I have items like:
£58 for personal effects (nice things),
£58 for gifts and
£65 for personal care. That's absurd, you only need max £15 for that shit really.
I average:
£15 a month on alcohol,
£20 on cafés and a whopping
£53 on non-grocery supermarket items. Cutting that back as of now!
My food is £275 a month. I'm a tight shopper, but don't deny myself - there's half a leg of lamb, a medium chicken, fresh fruit, bagged salads and several packaged Mediterranean sides in my fridge at the moment, and the freezer's so full I can't fit anything else in. I eat a lot; most of MN would say I eat enough for two.
Even if you spend £125 more than me (£400) on food, you won't be throwing money at my other ridiculous categories so will easily have enough for your weekly wine and whatever other small pleasure make your lives worth relishing.
So what I'm suggesting is that you can EASILY cope with £600 a month for your necessities, including some 'personal effects' and takeaways, etc.
That leaves you £400 for the stuff you like to save up for.
If you and DH eat meat, I strongly recommend buying larger items - poultry, pork and beef joints are always on offer. Just roast 'em, cut them up and freeze in appropriate amounts for a tagine, stir fry, whatever. Alongside ordinary stuff like mince, some fish and sausages/bacon, you'll always have a choice of main meal and it won't all be lentils.
Always check out the multibuy offers. You'll discover the ones that really work for you, making the shop a whole lot easier and better value.
The one thing you CANNOT do, in my extensive experience, is think "Oh, that looks nice!" and chuck it in your basket. Think "That looks nice, can I find it cheaper or make it myself for less?"
It's fine 🤗 Off to investigate what the hell I categorised as 'non-grocery'!!