I quizzed DD (just done year 1, but has jobs to pay for rather a lot of holidays and clothing). She reckoned you can easily feed yourself for £30 with a bit of planning (she swam, so ate a lot of chicken thighs and eggs) and batch cooking mince bulked up with pulses or beans. She mainly drinks water (so add extra for drinks out etc if necessary)
£5 for washing approx (but befriend other people with washing machines in their flats if broke).
Toiletries (that will vary a lot)
Books and paper - hardly anything compared to A levels.
Phone - bought a refurb so Sim is sub £10/month
Transport (coach is significantly cheaper); book well ahead if possible.
She lived very comfortably off the min grant, with us paying the rent, but she isn’t a big drinker of booze or coffee.
Her halls gave her free gym/pool access and she could walk to campus from halls (you might need to add extra for that). Clubs varied in price, with sports ones usually on the more expensive side. With luck you can “try before you buy” during Freshers.
Nightclubbing seems to vary a lot between Unis. i think she took a fair few Ubers, but would have lift-shared. She also had friends in other years with cars (useful for sports stuff).
It is probably worth asking on Studentroom and whatever social media the students are on.