An Oxford college was forced to cancel its “cannabis themed” party amid accusations of "cultural appropriation".

The entertainment team at Mansfield College planned to host a bop on Friday night where students were encouraged to dress up as their favourite “stoner icon”.

In an email to undergraduates, they explained that the party would be “420” themed to commemorate the “internationally recognised day of protest for the legalisation of Marijuana” on April 20th.

Students were told: “420 is not about the consumption of da herb itself, and more about the arts, music, and literature surrounding it; it’s a celebration of a rich culture including everything from hippies to Hip-Hop, from Seth Rogan to the Dude.”

The email encouraged “all you (plant) pot-heads out there” to “dress as stoner icons like Snoop Dogg, Todd from BoJack, Shaggy from Scooby Doo, Harold and Kumar – or even the Super Troopers.”