Thanks for the suggestions. I'm not interested in an AIO cooler though! I'm more inclined to go for an air cooler. Just personal preference.
https://www.overclockers.co.uk/arctic-freezer-34-esports-red-cpu-cooler-120mm-hs-072-ar.html
https://www.overclockers.co.uk/cooler-master-hyper-212-black-edition-cpu-cooler-120mm-hs-081-cm.html
Those two seem decent too for the price & reviews?
Arctic make excellent air coolers. They're usually top performers in their price range and their fans last ages. 7yr warranty on their retail fans, not sure if that extends to bundled fans too though you'd have to check that. I have a freezer extreme still knocking around with its original fan and that thing has put in some hours over the years.