While punk rock clearly has deep roots in the U.S, it would be sacrilegious to neglect mentioning the U.K.’s role in its prodigious rise. During the 70s, the British economy was in bad shape; unemployment was high and the youth were angry and disaffected. These conditions created an ideal environment for rebellious, politically motivated punk rockers to cultivate a booming London punk scene. In 1975, the Sex Pistols made their first live appearance, and by the end of the year, several more punk bands that would reach legendary status – including the Clash, the Slits, and the Damned – had formed.
I believe London was more structured around anger at the current state of the country/economy and the USA punk scene was way more about irony and going against the grain of society.