Russell Brand has cancelled the rest of his stand-up tour following his mother's car accident revealing that that she has sustained "numerous, life-threatening injuries".

The comedian’s 71-year-old mother, Barbara was rushed to hospital after being badly injured in a hit-and-run car crash onThursday (April 27).

She was in the back of the comedian's chauffeur-driven Audi A8 when it was involved in a crash with another car, the driver of which fled the scene.

Brand has posted a video on Twitter, telling his fans: "My mum's been in a really serious road accident and has sustained what are called poly-traumatic injuries, that means numerous, life-threatening injuries.

"So, I won't be able to do the rest of my Rebirth tour. If you've got tickets, they'll be refunded or possibly rescheduled but I can't really imagine that and I certainly can't imagine performing at the moment, because I feel too sad and too connected to this.

"I apologise but obviously it's circumstances beyond my control."

Brand said he realised "the importance of people you love".

And he added: "I'm sad for my mum. She's vulnerable and she only finished chemotherapy a month ago. For her to be in this situation already is very difficult..."

Brand said he would be off "social media for a while," adding: "Thank you for all your positive, beautiful messages."