I recently bought the dell inspiron 7000 gaming
it's £950 if you can stretch that far i highly recommend it. it's brilliant for all games and easily upgradeable https://www.amazon.co.uk/Dell-Inspiron-15-6-Inch-Gaming-Notebook/dp/B01NAW8DX0/ref=sr_1_2?ie=UTF8&qid=1519803608&sr=8-2&keywords=inspiron
if this is to much, you can get the same with nvidia 1050 graphics card i5 and 8gb ram for 700 https://www.amazon.co.uk/Dell-Inspiron-15-6-Inch-Gaming-Notebook/dp/B01MR90P51/ref=sr_1_2?ie=UTF8&qid=1519803608&sr=8-2&keywords=inspiron&th=1
ram is incredibly easy to upgrade on this model. i upgraded to 32gb