Music entrepreneur and YouTube star Jamal Edwards has died aged 31.
He was the founder of SBTV, an online urban music platform that helped artists like Dave, Ed Sheeran and Jessie J come to prominence.
Rapper AJ Tracey was among those paying tribute, saying on Twitter: "RIP Jamal Edwards, west London legend status."
Born in Luton, Edwards was appointed an MBE for services to music in 2014 and was an ambassador for the Prince's Trust, which helps young people set up their own businesses.
The MOBO Awards said: "We are deeply saddened to learn of Jamal Edwards passing.
"As the founder of SBTVonline, his groundbreaking work and legacy in British music and culture will live on.
"Our hearts and thoughts are with his friends and family."
The son of Loose Women panellist Brenda Edwards, he grew up on a council estate in Acton, West London, according to the Prince's Trust.
He started SBTV in 2006 as a teenager and has grown the YouTube channel into a multimillion pound online youth broadcaster.
The channel has gone on to make music videos with popular artists like Nicki Minaj, gaining over 212 million views.