Your input will be appreciated.
If you are studying then you join the Students Union, that is acceptable ID and also gets you lots of discounts for leisure, IT, food etc
You;ll have a student card with photo I.D. which you can use if needed.
Anything with a picture of yourself on and your date of birth such as your student card or a drivers license/provisional if you have one.
You won't be asked to show ID that much. Even kids go to pubs. 18 is the drinking age.
Your student card.