Some of that will be adding big roll, toothpaste etc..We ( 2 adults and young teen) have occasional weeks where we only spend that much but most weeks it’s more like 75 quid and occasionally more like a hundred if a few things run out at the same time.
If you were looking purely on a food basis its very manageable..
Not saying you would have much meat or treats but healthy and sustainable certainly
I'm not saying it's ok . I'm saying with being inventive and resourceful you can make food go a long way.. some meals less that 67p allows other meals to be more expensive . Won't be anything exciting but won't be detrimental to your health either.With the advantage of it being bulked by the number of people.
And being sandwiches and crisps.
It’s absolutely mental that anyone is thinking this is ok
£1 pushing.. £2. Makes a huge difference