I'm a lawyer. I'm from a working class background - only one in my extended family to go to university. We don't know any doctors, lawyers, accountants etc. and most family members worked in a trade.
I did okay in GCSEs (good, but not exceptional), and then went on to do A-Levels. I just did this at my local comp school which had a sixth form attached - I didn't even know there was snobbery about schools in those days!
I then went to relatively good uni and studied a Law degree (not quite Russell Group level, but a decent uni nevertheless). It was back in the financial crash years, so training contracts disappeared except for magic circle firms so I didn't get a training contract straight out of uni. I paid myself to go and get the Legal Practice Course (~£12k in those days - 1 year course needed as part of solicitor academics) using a grad loan. From there I went and got paralegal work as there were no training contracts on offer, so I figured I'd get some experience whilst I waited for the training market to pick up again. This actually worked out well for me, and I ended up working in commercial contracts and IP law working in-house at a technology company and training through them a few years later via a training contract. I'm now 8+years qualified and working in tech industry in-house and I love it (and it pays well in my field in-house which is obviously a bonus)!
I guess the point is that there are so many different types of law and ways to practice it. Often students fall into the trap of thinking being a lawyer = magic circle private practice. Regional firms, smaller firms and in-house companies offer interesting and decent work too. It really is about your interests, your lifestyle, the environments you want to work in.
Most of the students and colleagues I've worked with over the years are bright and hard-working people - at least half are from traditionally working class backgrounds. Not all lawyers have these exceptionally high academics people talk about being a must-have requirement, but what they do have is amazing critical thinking skills, commercial awareness, agility and accuracy in their work.