I have watched video with Hugh Laurie and I have noticed that sometimes he pronounces words such as 'chin' and 'chuffed' with kind of [ʃ] sound at the beginning (not [tʃ]), so they sound more like 'shin' or 'shuffed'.
I've never heard anyone speaking like this (I'm not from an English-speaking country, so I hear English mostly in movies.)
Does it have something to do with him having British accent? Is it a common thing? Or is it just an accidental mispronunciation?
[here's the video]'chin' is at 1.12, 'chuffed' is at 2.38
Thank you. )