I know lots of people with good jobs who didn't go to Russell Group universities. Just don't go to one of the really bad ones like Wolverhampton or London Met and make sure you get a 2:1 at least.
People with English Lit degrees aren't exactly sought after if they're not going into teaching and don't have a masters degree. Hmmm...if you don't want to go into postgraduate study, you could always apply for a graduate scheme which anyone with a degree can get onto. They only accept 2:1 and above though.