UCL vs Warwick for postgraduate

I'm trying to decide between UCL and Warwick for my masters but I like both equally. I'm interested in which uni has a better social life for postgrads as I didn't socialise much at my undergrad and regret it a lot! And I want to go somewhere that doesn't have too many international students, I want to meet people from here (I enrolled at Imperial this year and started the course but didn't really want to be there so I dropped out - I only enrolled due to its ranking but there were sooo many international students I didn't really click with anyone). If anyone has gone to UCL or Warwick, particularly postgrads I'd love to hear about it!

UCL pros:
Much higher ranking internationally than Warwick
More optional modules
Can save money as I live in London

UCL cons:
More international students
I want to move out but will have to stay at home since I'm from London
Will have to go to uni everyday 9-5
Exams and dissertation

Warwick pros:
Much more relaxed - don't need to attend uni everyday
Will be living at uni
No exams or dissertation

Warwick cons:
More expensive due to accommodation/living costs

As you correctly surmise UCL is full of international students.

I would go to Warwick. Only a year but different town. Campus univ. It is well regarded and do you really want to do exams. My daughter was undergrad at UCL and post grad imperial. Her vest friend went to Warwick and had a ball.