There's bits of everything in there north of Watford Gap - I mean, I know where you're from & all, but it's not really your accent any more. There are distinct elements from both side of the Pennines, but they sound buried under a professional RP which tends only to crack and reveal what lies beneath once you've had a real skinful. Basically like any well-travelled person, you've picked up bits and pieces from everywhere you've spent any serious amount of time.