Internet - often in Halls as a first year, if not, then use the library, should be ok so not needed.
Text books - Yeah they can be expensive to be fair, but again use the Uni library, they will have alot of what you need. if not you might find some online 2nd hand.
Launderette - needed, but you can be frugal with when you use it, for example bring clothes home towards the end and rationing out the clothes to ensure the min usage of such facilities.
Laptop - same as the internet, not needed and can use library computers. Not ideal, but again a possible solution to save money if needed.
Food - Just a case of finding whatever is cheapest out there, lots of basic/value brands, lots of pasta/rice based meals where you can bulk buy. Still there are limits I suppose with how cheap you can go with no freezer.
Train fare home- if you book well in advance and for specific times you can get very cheap fares if you know where to look, even these days.
Prescriptions - options out there for low income people.
Utensils - you can budget stuff for a pretty low price, so won't contribute much at all to 5k a year that is suggested.
Duvets/blankets - same as above, just get a supermarket basic version, will do the job for a year or two.
Clothes - Primark, or keep an eye out for heavy sales. May not be the most fashionable, but on a budget you make the most of what you've got.
Social events/takeaways - probably the hardest thing here. They just have to say "no" sometimes and have some self restraint. If you can't afford it, then just like in the adult world, you either put yourself in debt to pay for it, or the better option, don't do it at all. I totally understand that will feel unfair whilst their uni friends can go out, but you have to cut your cloth accordingly. I knew someone at uni who lived off of about £10 a week (probably about 15-20 adjusting for inflation.) they were mega careful with food spending, only went to free events and maybe had 1 coke that lasted as long as possible, no takeaways, etc. Eventually they got a part time job to allow them to have some sort of lifestyle.
Again its not ideal, and the student has to make some sacrifices. But then again thats life. Its not fair and you have to learn to life within your means and not expect the govt/others to keep bailing you out because you don't want to find a job/cut back on the lifestyle.