Up to one million people are expected to attend the Carnival to experience Caribbean culture, food, music and dance.
Thumping basslines, sizzling meat and tooting whistles filled the air as giant floats made their way from Westbourne Park Underground station, up Kensal Road, along Ladbroke Grove and down Westbourne Grove in West London.
One of the first groups to take to the streets was the charity Kinetika Bloco, whose dancers wore pink, green and white costumes while a brass band played songs from The Clash's Rock the Casbah to Daft Punk's Get Lucky.
More top news
A head chef lost more than half his 36st body weight thanks to tough love from a friend who called him a fat f***" every day for six weeks.
It comes after the government announced international GCSEs, which many private schools use, would be dropped from the league tables.
Rape suspects will need to prove to police that a woman consented to sex under fresh new guidance in sex offence cases.