I want to get into MTB’ing
If you’re new to modern MTB with fickle suspension parts, and modern high tolerance drivetrains and you do actually get propelry into it and ride a lot then you will crash, break stuff, bend stuff, and wear stuff out without noticing and do further damage, these things are not really ideal for something north of £3k as a beginner.
You may also find that even if that £3k bike is great, it might not be great for you and your style/preferences, which incidentally you don’t know yet, so again not really ideal.
I don’t want to be changing or buying new parts anytime soon hence why i would be cool with this money
^ Suggests to me that you’re trying to future proof your purchase and do it ‘right’ first time, it’s an admirable goal, and if you really do get into it then can be well worth spending the money, the problem is you’re going to go through a learning period about kit and preferences, so sometimes it can be worth looking a bit lower down the ladder first, not because as a new rider you don’t deserve it, but because you just don’t know at this point what is going to work for you.
If however £3k is small change to you and the money isn’t really an issue then by all means ignore me and buy the shiny-shiny-nice-bike 🙂
EDIT – all this typed before your post about riding before Uni!
If you’re just playing catchup as a lapsed-rider then that puts a slightly different slant on it, the comments about preferences are still valid though as people change in 10 years as much as bikes do.