UCL natural sciences- lucrative career options?

Most big consulting/accounting etc companies offer grad schemes that don't necessarily look at your actual degree - more so the grades you get. If you look at the Big 4 consulting firms for example, none of them have degree subject requirements for their grad schemes, but all need at least a 2:1. My personal recommendation would be to do a degree you actually think you'll be able to do bc there's no point doing business/econ or something if you're gonna suffer through it and end up with a 2:2, and no experience bc you were too stressed to apply to internships, when you could've gotten a 1st *and* some experience doing a degree that you enjoy. Also, if STEM is something you enjoy, it's probably worth staying in that field bc you can go out of STEM and into more business roles, but if you do a non-stem degree, you can't then go back and e.g. work in a lab if you change your mind. Sorry for the rant lol but I hope it was helpful

Yes, the rant was very helpful lol thank you
I'm not really sure yet as to what career I want to go into- but something that pays very well (100k+ after a few years of graduating) is the main motivator as I am not sure as to what I enjoy doing.
In terms of getting a 1st, or a 2:1, this is also something I'd like to know more about as it is difficult to tell from the website the 'difficulty' of the degree. i.e what % of people get a 1st, 2:1 etc, as there is such a big variety in modules/streams to choose from.
On a side note, in terms of quantative fields, especially in finance, is it still possible to compete to gain a spot at these top firms with a degree in natural sciences that is more biologically orientated (I still plan to take as many mathematical/statistical modules as possible). My worry is that I will be competing with other graduates from top universities who do degrees such as maths,engineering, physics, finance, stats etc- and my degree isn't as quantative as theirs. Would I need to take an additional master's course in something more statistical/financially relevant, not just for quant, but other career paths as well?
Thanks again for responding.

Getting a first isn't necessarily easier for certain degrees than others - it's all based on how much work you're willing to put in. What I will say is that most of the people I know have at least a 2:1 or above and haven't put in that much work tbh, and the ones who get 1sts are the ones who really enjoy the subject and do extra reading/ask a lot of questions in and after lectures to get those top grades and doing that imo it absolutely needed for a 1st. I'll also add here that I wouldn't worry too much about what modules you're taking in terms of them aligning with your degree bc for grad schemes especially, they're looking to train you to their taste which is why you'll find social sciences grads working in audit and accounting, so I'd pick modules that have assessments you're good at (coursework vs written exams etc). If it is something you're worried about though, I'm not sure if this is across all degrees, but I was allowed to take electives - so modules that will count towards your end-of-year credits but they can be from any department (last year I did a Philosophy module, and this year I'm doing an Anthropology one - I do Biological Sciences at UCL for reference). That's maybe something worth checking w your department bc you could then potentially take some finance/stats etc modules if you're wanting to get a better understanding of those types of things.
On that side note, it's definitely possible to get into top firms with a Bio-oriented degree! It's probably worth looking at some companies now just to make sure they don't have further requirements, but in my job search, I've not come across anything that has wanted a specific degree. Grad schemes have a specific recruitment process (case studies, online tests etc) that basically aim to see if you'll fit into the role and the company, so it's probably more important to practice those, and interview skills if you're aiming for those kinds of things. Obviously if you're looking at something like working as an economist then you'd need a stronger econ background lol, but stuff like accounting/consulting/finance don't *need* a specific degree - one of my friends for example did speech therapy at uni and got a job in finance at kpmg straight after she graduated.
I'd definitely recommend that you look at some of these companies and their entry requirements, and try to get some summer internship experience whilst you're at uni, and get involved with societies (UCL has soooo many societies defo try and get involved with more career oriented ones like 180 consulting so on and so forth).