I'm someone at an "other Russell Group" and I'm sleep walking my way to a 1st in a science degree. Yes, there is work to do, but it is not overly challenging. It is more a question of can you be bothered to turn up to your labs and are you willing to do a load of rote learning each week. The intellectual challenge just isn't there. Having not experienced other unis, I can't really compare but I'm starting to think I should have been more ambitious in where I applied to.