I believe he is of Nigerian origin, like many "Brits" in London these days

The dude is natural, seen him kicking around, in a t-shirt you would walk straight past him, he is not big, however is it totally ripped and has and absolutely tiny waist. sad to say for a lot of people who have trouble accepting this, but you can find lot of these nigerian and west african guys with similar physique. Most have no clue how to train, but the few that do gain and transform their physique very quickly.