That's because he's from Leeds. Leeds being the most whinging, whiney annoying accent in the Universe. Unlike Sean Bean who is a Dee Dah of course -yet still has that irritating Dee Dah habit of elongating his vowels.
There are similarities. Leeds people have an annoying trait of not being able to pronounce the letter 't' in the middle of words eg Forty becomes For-ee Harry Potter becomes Harry Po-er -and so on. Equally as ****ish is words ending in 'erry' being spoken as 'urry' eg Cherry become Churry, Terry becomes Turry and so on. Quite laughably a lot of them don't think they have an accent as such. 2nd division accent - third division football team