Closed back Headphones

Looking for some good closed back cans. I mainly want them for music largely metal so they need good bass, i also game so a good sound stage is needed but sound quality takes prescedent.

I'm British so plz link to UK sites. I've set the budget at arround 100GBP but feel free to reccomend cans up to about 250ish.

Closed back and great for bass? The first thing that always comes to mind is Beyer Dynamic DT770 PRO.

Being from the US, I'm honestly not sure what places are available for headphone purchases in the UK, so I just used Amazon.co.uk as an 'example'. Feel free to shop around, you should be able to find the DT770 PROs for about the price you're looking to spend, and they match your criteria perfectly.