Applying to only russell group universities?

Honestly I think you could probably swap a few of these out for stronger options e.g. Durham, LSE, UCL, Nottingham, etc. QMUL is a decent backup if it is indeed BBB (which seems surprising to me).
I wouldn't overly focus on the Russell Group factor though, as that's not how employers consider graduates. Also the RG is a political lobbying group masquerading as a postgraduate research consortium and in either event, there's no relationship between membership and undergraduate teaching quality or anything like that.

Okay, thanks for that. Queen Mary by the way is typically A*AA but I am doing an outreach programme with them, so I should receive an offer of BBB.
Not entirely sure if I'm interested in UCL or Nottingham and I visited the other two you mentioned and didn't like them. Plus, I think that defeats the point of my post - I understand that the Russel Groups shouldn't always be put on a pedastal but they are and I was wondering if the fact that I am applying to only Russel Groups would put me at a disadvantage given how competitive they are. I don't think apply to even more of the most competitive ones would help, especially for law. But thank you for the advice.

Except they aren't put on a pedestal. Only a handful of elite City law firms are likely to care that much where you studied, and "any old Russell Group uni" isn't going to cut the mustard for that - they are specifically targeting grads from particular unis, which also happen to be in the RG. Note also those roles represent a tiny fraction of the number of graduate roles available.
However if that's what you care about, then you should not bother with any RG uni that isn't realistically from those rarefied few in the first place. QMUL and Cardiff are not better than non-RG unis for those limited roles where it's a factor as I understand. Outside of that small set of employers whether you go to a RG (be it LSE or Exeter) or not is I think unlikely to make a difference relative to what you as an individual have done in the course of your degree to make yourself employable.
Equally aside from that you do have excellent grades so there's no reason not to consider those universities in the first place anyway.

For law, would you say it’s wise to apply to only russel group universities. These are the ones i intend to apply to with their requirements (contextual offers that. receive from being on the Sutton trust programme included).
Oxford - AAA + LNAT
Warwick - AAB
Cardiff - AAA-AAB
King’s College - A*AA + LNAT
Queen Mary - BBB
I’m predicted A*AA in sociology, English and Spanish respectively. I achieved 999998887 in my GCSEs and attend a state school. Do you think it’s safe to apply to these schools or should I swap one of them out for a “safer” school. If so, any recommendations?

Sorry, I think we misunderstood each other. Obviously, going to a top Russel Group is important to getting a job at a top law firm, I understand that. Whilst Cardiff or QMUL may not do that for me, it is also equally important for me that I can attend university. When I say all the RG are put on a pedestal, I mean in terms of competitiveness because other students will look at any RG and apply because it is in the RG and they tend to have higher grade requirements. I know that some Russel Groups are more employable than others, but what I am asking is in terms of admission is there a good range of competitiveness in my five choices to ensure I can go to university next year. Realistically, if QMUL ended up being my only offer I don’t think I would go but at the end of the day, I just want to get an offer from university, save face and make my family proud, what comes after that can be delt with later

Sorry, I think we misunderstood each other. Obviously, going to a top Russel Group is important to getting a job at a top law firm, I understand that. Whilst Cardiff or QMUL may not do that for me, it is also equally important for me that I can attend university. When I say all the RG are put on a pedestal, I mean in terms of competitiveness because other students will look at any RG and apply because it is in the RG and they tend to have higher grade requirements. I know that some Russel Groups are more employable than others, but what I am asking is in terms of admission is there a good range of competitiveness in my five choices to ensure I can go to university next year. Realistically, if QMUL ended up being my only offer I don’t think I would go but at the end of the day, I just want to get an offer from university, save face and make my family proud, what comes after that can be delt with later

Given your predicted + GCSEs it definitely is worth having one backup/safety uni and aiming for ambitious options (agree w/ artful lounger there). I personally study law at UCL and I love it, based on my experiences applying for top law firms etc and the caliber of people I come across I would recommend Bristol/Durham as good law school options to consider too. (this is only based on my experience, so take it with a pinch of salt).

So do you recommend replacing one for a less competitive school or a more competitive school like UCL or Bristol?