What do you call dorm rooms in the UK?
I have done my research and found that it is called "hall of residence", but what do you call the rooms itself?

For example:
- A student bought a heater to use it his dorm room.

How do you say this utterance in the UK?

Do you say:
- A student bought a heater to use it his hall of residence's room. (I find it too weird!)

Question

What do you call dorm rooms in the UK?
I have done my research and found that it is called "hall of residence", but what do you call the rooms itself?

For example:
- A student bought a heater to use it his dorm room.

How do you say this utterance in the UK?

Do you say:
- A student bought a heater to use it his hall of residence's room. (I find it too weird!)

Answer

I went to a funny university where we live in college rather than a hall of residence, but either way we would just get a heater for our room. In British English a 'dormitory' or 'dorm' is a bedroom shared by many people, and we don't have those at university.

Answer

we don't really have a specific word for the actual room, but we say "in halls"
For example - Where are you going to live next year? "In halls"
in your example- " he bought a heater to use in his room in halls"
(Disclaimer- I went to university in the UK nearly 20 years ago, and that's what we said then, maybe a younger person might answer this question differently!)