@Truffles_13 Okay, here are a few more options to consider.
This laptop is equivalent to the first one from Argos I listed, but it's £20 cheaper:
https://www.dell.com/en-uk/shop/laptops-notebooks-and-2-in-1-laptops/inspiron-15-3000-amd/spd/inspiron-15-3585-laptop/cn38507
These two are equivalent to the third one from Agos, and also both £550:
https://www.dell.com/en-uk/shop/laptops-notebooks-and-2-in-1-laptops/inspiron-14-5000/spd/inspiron-14-5485-laptop/cn58501
https://store.hp.com/UKStore/Merch/Product.aspx?id=8UD82EA&opt=ABU&sel=NTB
All of these are in the same class and would give you pretty close to exactly the same performance in-game. The question then becomes whether you'd want to spend more for a large fast hard drive(512 GB solid state drive) rather than a smaller fast one (256 GB SSD) or a large slow one (2 TB mechanical drive).
This isn't really a proper gaming laptop, but it does have an entry-level dedicated graphics card, one that would handle the game better than the previous models. It's also £550 and has a combination 128 GB SSD/1 TB HDD, so you'd have the benefits of a solid state drive for Windows but also plenty of storage.
https://www.box.co.uk/30025003-Medion-Akoya-P6685_2431522.html
These two, both £600, are real gaming laptops, with a real gaming graphics card, one capable of running Sims 4 on ultra graphics settings, albeit barely. Aside from hard drive space, the major difference is that Asus has a better reputation for its gaming laptops than Medion does. Unless you really want the extra storage, the Asus would probably be a better option. The other core components are the same or equivalent.
https://www.box.co.uk/FX505DD-BQ121T-ASUS-FX505DD-BQ121T_2902781.html
https://www.laptopoutlet.co.uk/medion-erazer-p15601-15-6-inch-ci5-9300h-8gb-1tb-256gbssd-gtx-1050-windows-10.html?___SID=U
Just to clarify, these last two are in the same class as the Medion I linked earlier, although they're a bit newer. But they should all have more or less equal performance in-game as well.