He was clearly not American, but the accent is quite a bit flatter than what I would usually think of as Irish or Scottish. The R is almost exaggerated, compared to an American accent. It reminds me of an interview I heard with an Indian who taught call center employees how to speak with American Accents. His was close, but he overcompensated with the Rs.
The accent in the Google video reminded me of a thread around here a long time ago. There was a youtube video of a guy in Counterstrike who had been pissing off all the other players on a European server. They were complaining (in a variety of English accents) about the American asshole. He kept insisting he wasn’t an American, but sounded kind of like someone from the northern Midwest except for a couple of vowels and saying "haitch"when referring to the letter H.