Thanks for all of the advice in this thread, it is very helpful and much appreciated.
What are your thoughts on the laptop below, seems to have very decent specs and with the 20% cashback it comes out as £641:
https://www.very.co.uk/asus-tuf-gaming-a15-laptop-156in-fhdnbsprtx-3060-amd-ryzen-7-16gb-ramnbsp512gb-ssdnbsp--grey/1600939481.prd?sku=sku27009211&cm_mmc=google-_-PLA+-+Generic-_--_-__&utm_campaign=Generic_Electricals+-+Computing+-+PMAX&utm_medium=cpc&utm_source=google&utm_term=&campaigntype=shopping&gclid=Cj0KCQiAr8eqBhD3ARIsAIe-buMRptnCFRVd3vr4I8bKlWCT5t01oWaxTF1M_8Qdelera2gIB_0cmywaAhvdEALw_wcB&gclsrc=aw.ds