Going to be as honest and upfront as possible. I just finished my Bachelors in Aerospace Engineering (2:1) at Surrey, and I have to say I was pleasantly surprised when I first arrived 3 years ago. My two final years of secondary/high school felt like a pressure cooker and I didn't get anywhere near my expected grades, I was really not in a good place mentally or physically. Fortunately, Surrey was still willing to take me.
People generally focus on the University's name and they judge you even if they know nothing about the University (or you!). Think about it, literally no one has been through two bachelor programs at different universities, so comparisons between universities are not objective. If you're talking about the rankings... What do they really mean? You are much more important in determining your future than the averages these websites come up with - they are bordering on meaningless. A university is not going on a job hunt, YOU are. Even so, a lot of emphasise is placed on the rank or name, and other factors that can affect your wellbeing are often ignored when people choose a university.
Number one, Guildford is a well developed place. It has a busy town centre, and is a 30 minutes train ride from London. Guildford is EXPENSIVE to live in. Another thing thats common among students, prepare for loneliness and expect this to continue unless you put yourself out there! Your old school friends are all gone and essentially you have to restart parts of your life, new girlfriend maybe? New food? Culture? NEW FRIENDS. You're like a little plant, and you've been uprooted and now you'll have to adapt. What are you going to do to cope with these huge changes? Alcohol? Weed? Harder stuff? Exercise? Be careful of who you make friends with, you'll likely move in with them after first year. You become more people you're around for a long time.
When I applied, the university was second only to Loughborough when it came to sports. This is really important. You cannot waltz your way into tryouts/training, even if you're in the 5th/6th team. The selection process is ongoing, which means your performance at each training is monitored. If you want to make ANY of the teams, focus, focus, focus, rather than do a few really well, get AMAZING at one. The social life and sports life are intertwined.
When it comes to classes, they are part lecture based, and part tutorial. The lectures start off HUGE (large lecture halls or auditoriums) and each year they get smaller. This is mainly because first year courses can be shared among similar subjects, like maths and fluid mechanics are the same for chemical, mechanical, and aerospace engineers. But in second year and especially third year, courses are more specific. Aerodynamics and turbo machinery for example are ONLY aerospace modules, so its down to 30 people or less. Tutorials are always 30 people or less, and the professors have a few PhD students helping, so you'll definitely get help.
For the group project I got to work on the formula student project in my final year which was SUPER cool. I designed the rear wing of the racer. Had no idea I'd be accepted onto that project. The other group projects are also challenging, imo they're one of the best parts of the course. This project is year long, and you'll take another year-long group project in year 2 (decided for you) and an individual project (dissertation) in year 3 (this one's up to you but at least ONE your proposals HAS to be accepted by a professor or they'll just make one up for you - this happened to me and I'm still not over it, my idea was rad).
Graduate opportunities... I can neither confirm nor deny this, Im still on the job hunt. I have to say though "graduate prospects" doesn't mean **** - your degree classification, how much effort you put into the job-hunt, and the university name are much more important. That being said the university does have some good ties. (research them)
Another thing - Although you may get used to the university's name, back home people are still going to be confused when you say Surrey University... This might change in the future as Surrey went up the rankings recently, but I doubt it. We put more emphasise on the institution someone goes to rather than the student themselves... But thats a society problem and is a topic for another day.
Keep in mind that if you haven't been to university yet, all your ideas on what it will be like a fabrications of your mind, skewed by flashy films, and your imagination. It's still school, you still have to take assessments, the only main difference is its in what you want to do (what you think at least), and there are way more people. Also you learn to be your OWN MAN or WOMAN. Being away from your parents means you can do whatever you like, but only you are responsible for your future.