You will be great!
I was really worried going back to Uni that I would stick out amongst a sea of 18-year-olds, and not find my place at all. However, Uni life is wonderfully diverse and there will be lots of different people that you will socialise with I am sure.
For me, age hasn't come up and although when I started Uni I made contact with the mature student society, I haven't been to a lot of events with them. I have been able to find people on my course and people I work with of all different age groups to spend time and company with.
It is also favourable in some instances as you have that life experience and understanding that for me has definitely been a benefit. I find that being at Uni as a mature student I am more confident and more myself than I have ever been before.
I wish you the best of luck on you course and know you will have a great experience
Luke - Portsmouth Student Rep