Roni Size (born Ryan Williams, October 29, 1969 in Bristol) is a British music producer and DJ who came to prominence in 1997 as the founder and leader of Reprazent, a drum and bass collective. That year they won the Mercury Prize for their album New Forms.

Reprazent , a Bristol, United Kingdom drum and bass collective, came to national prominence in 1997 when its founder and leader, Ryan Williams, better known as Roni Size, was awarded that year’s Mercury Prize. Williams grew up in the Bristol suburb of St. Andrew’s and cites Reggae as one of his early influences. He was expelled from school at the age of 16 and started attending house parties run by Bristol mavericks the Wild Bunch (later Massive Attack). He learnt the basics about music prod