Okay so I'm basically making a muscle costume and have no idea where to find some thick foam. I've obviously checked online but there must be somewhere cheaper.

I need a fair bit to make a large chest and gargantuan arms for Tager from Blazblue but due to being in Luton at the moment which is still a relatively new place even though I've been here a little while it's still a challenge to find this stuff and for a reasonable price.

So any recommendations?

If it's upholstery foam you're looking for, I see it in big fabric/haberdashery shops often. You could always ask the staff there too, because people make seat cushions etc, even if they don't sell the stuff they should know where to get it.

The Dunelm Mill near me also sells it.

Dunelm Mill, a friend mentioned them. Will check it out online and try and find a local one.

It's not as good as foam, but ive seen people make muscle suits from douvets? it may turn out cheaper than buying foam and its easier to find.
Only thing is it's obvioulsy not as firm as foam XD

sounds like a really good idea, probably be a bit easier to work with xx

You'll find duvets to be much hotter than furniture foam is the only thing. They were made to insulate!