Though this turn is for a US studio I am lead to believe Mr O'Brien hails from these shores and has paid his (solo) dues with most of the top producers here (one of which I will be posting later in the year).
EDIT: the Britishness of this model has since been confirmed to me via Twitter from his first porn employer (links to a preview video):
picturethisguys@cobaltmale Patrick O'Brian is indeed a true essex lad, and shot his first naked solo movie with us as Harrison Gray! http://
www .picturethis -studios .co .uk /index .php?action =prevgallery &id =43 &d =2