Thanks for the quick replies.
It looks a lot more prominent when he's in your hand and with only having him 8 days i haven't picked him up since he came home with me until about an hour ago when i took the pics. He's quite mellow and sleeps all day on show which is great but is a bit skittish when i picked him up but with time he'll settle i hope.
He was kept with another in the shop but i think they got on fine, he'd been there a month before i bought him(and if he hadn't still been there i'd have waited for another one that had great patterns like him).
I'll get him into a clear tub and see if its just bad shed or if its more than that and try get a photo thats a bit better if I'm still unsure.