So are there any "good" or even outstanding universities outside the Russell Group? Well, yes of course there are.
However, like it or not, annually published university guides in the THE, prospectuses, career guidance booklets, professional society literature and countless other career publications now and in the past have persistently recommended that a student should aim to obtain a place at a Russell group University. This promotion of Russell Group universities was in place when I took my "A" Levels and I'm no spring chicken.
The reasons for the promotion? Well, these would include better research sources, more likelihood of achieving a good job, more likelihood of promotion and no ceiling on salary for a outstanding graduate.
Now like it or not, this has been and always will be the future for Russell Group graduates. Society dictates that this shall be so and it's no different for Harvard, Brown and MIT graduates in the USA as long as the old-boy network continues throughout the world, nothing will change.
"Good" universities and "the others" is a direct consequence of this bias but I need to say that I'm not in favour. Apart from anything else, I haven't always spent my years walking the corridors of this hallowed Oxbridge college and I've seen both sides of the coin.