Slain rapper Tupac Shakur has topped a new list of artists admired most by British prisoners.

National Prison Radio officials compiled the poll of hitmakers based on requests they receive from inmates at the nation's prisons.

Tupac saw off competition from Jamaican dancehall artist Vybz Kartel and rapper K Koke, while Rihanna, who comes in fourth, is the only female artist in the top 20.

Also making the top 10: Drake, Akon, Metallica, Pink Floyd and Shakur's one-time rap nemesis Notorious B.I.G.