Hey,
I am a current 4th year at the uni of Nottingham.
I have really enjoyed my time here (so much so I stayed for my masters).
The campus is a really nice place to study. Lots of quiet and group study areas in various libraries across campus. It is a really green space so, especially in summer, there is lots of people outside enjoying whatever sun we get having picnics or playing games etc. The sports facilities are also probably one of the best things about the campus. Not too long ago it was refurbished so there is pretty much everything you could want and more from a climbing wall, pool, sauna, pool tables, sports halls along with the gym itself. There are also so many sports clubs to get involved with which is a great way to meet people. If you don't feel like taking sport competitively then there is the IMS league for hockey, netball, badminton, football, tag rugby amongst others where you play for your hall or societies in a more friendly league.
Along with sports there are also tons of societies to join in with so whatever your interests or if you want to try something new, you can find like-minded people and it is a great way to build a social circle.
Transport in Nottingham is also super easy. The train station can get you pretty much anywhere and most trains are also direct to London, Manchester, Birmingham, Leeds, Liverpool etc. The busses that have already been mentioned are the main way I get around if it is too far to walk. They are colour coded and the app tells you what number and stop to get on and off at. The tram is also relatively cheap and a good way to get into town from campus.
The city is super student friendly as there are 2 major unis there. There are plenty of chain and independent shops, restaurants, cafes etc, all normally with some form of student discount at some point or another. The nightlife is also great. There is a club or bar night every night of the week for students only which is always nice. There are also loads of venues of all sizes for live music along with the castle, caves, mini golf, cheap student tickets cinema, bowling amongst others.
In terns of demographic each year will be different. I have found that a lot of people come from london or the surrounding areas as it is really well connected and a 'northern' uni not too far away. That being said that is certainly not the only place people will come from. I have met a lot of people from around my area in Liverpool, Manchester, Leeds, Hull, Birmingham, along with quite a few international students. Wherever you are from or whatever background you will just naturally find your people and those you click with best.
I hope this helps and if you have any questions just ask,
Emily