It depends who the spartan IS, as everyone looks different facially, don't they? But generally, they can often look pretty rough & rugged due to the bio-augmentation processes they've been through (not to mention years of intense physical training & possible battle scars). John-117 supposedly looked no Brad Pitt whenever he removed his helmet.
their really aliens who want to over the UNSC and then take over the universe and then, make everyone drink tea. oh wait your talking about spartans i thought this was about the english.
Don't forget scones, we brits love our scones XD
just like normal humans black, white, ugly, pretty see Halo: Reach if u want to know