Whatever the fukk you say, what Jay has in the US, he has in the UK.
Platinum albums, big hits, sold out tours, headlining festivals, dikksucking radio dj's, dikkriding TV personalities and nowadays #1 albums.
And lol @ people not knowing who he is, UK is not Bulgaria, motherfukkers are informed.
Paparazzi in the UK for Jay is probably the worse than it is in the US, although that might be true for most American superstars.
Jay started focusing hardbody on UK when he left Def Jam and did his own thing. Got Calvin Harris, Rita Ora and K Koke. Started doing TV instead of just Tim Westwood, pushing his records to pop radio, commercials, magazines etc. The probability of meeting a person between 15 and 35 and this person not knowing Jay-z is infinitesimal. If not for his own work/brand, they would know him for his wife.