DD has just finished her third year (out of six!).
The big difference seems to be those who cook and those who rely on takeaways. She is very good at throwing together a risotto or a pasta sauce with whatever is in the fridge, so probably spent £35pw on food and so was able to live with a basic budget of about £50pw. (She took a student cookery course, but I would really recommend handing over cookery, budgeting and shopping to your soon to be student for the next couple of weeks, and identifying a rotation of meals, some based on batch cooking, plus cupboard staples. DDs course also included how to clean showers and kitchens etc. Many students have no idea.) It can vary. At her last placement before lockdown their accommodation was opposite a Morrisons so they had a regular forage at 7.00pm/yellow sticker time and so lived well on cut price food.
Beyond that its how long is a piece of string. Trips home (tell them about split ticketing and booking in advance and rail cards, and look at the coach alternatives.) Sport can be very expensive. As well as various dues, DD had to buy kit including a blazer. There were also a couple of "initiations", which should not happen, but do, and a couple of balls/big nights out. DD was not much of a clubber, and had early starts, so saved a lot that way. (Her sports friends thought she was anti social because she only ever lasted the pre-pres on the Wednesday big nights out, until she explained that she had a 9.00am placement the next day in a village with a once an hour bus from the city centre, so had to be up at 6.00am.)
Applying for DSA was an administrative marathon, which is ironic since dyslexics find administration difficult. I left DD to it, and was impressed that she made it through. The laptop they provided was not great and only lasted a year of rough handling, but by then she knew what she wanted. (The one she has now allows you to take notes by annotating on the screen, which helps as note taking is one of her biggest challenges.) When thinking about laptops it is also worth remembering that lectures are often available on catch up, perfect for dyslexics who learn better by listening rather than by reading. It is worth applying just to have any SEN on record. You won't know when you will need it. (The hastily Covid19-reorganised online exams had no provision for extra time. DD did fine, but had she not, and she normally uses all her extra time, she would have had something to fall back on. A global pandemic was nowhere near our thinking when she applied.)