The vast majority of students mature from Secondary Education into further education, so in that aspect you have greater chance.
I went to a college in Essex ( I live in East London ) where only 1 person I knew went there, I eventually left there with more than enough friends, that I made for life.
Just be yourself and don't try to be someone you're not as eventually you will be caught out, making friends is the easy part. It's keeping friends that's the hard part!
Good luck!