Sacha Baron Cohen knocks over old woman in a wheelchair

Sacha Baron Cohen’s been up to his old tricks again.

The ‘Borat’ star stunned bigwigs at the Britannia Awards when he seemed to push a woman in a wheelchair off the stage while collecting an award.

He was on stage to pick up the Charlie Chaplin Britannia Award for Excellence in Comedy from “87-year-old Grace Collington”.

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Billed as the oldest surviving actor to have worked with Chaplin, she gave Cohen one of the silent movie star’s signature canes to lark about with.

However, things went wrong when Cohen slipped and knocked poor Grace off the stage, to horrified gasps from the crowd.

It was a prank of course, with Cohen saying in his acceptance speech: “Grace Collington is the oldest, sorry, was the oldest… I dedicate my award to her. It’s obviously a tragedy but on the bright side what a great way to go.

“She’ll probably make the Oscars In Memoriam section… Anyway tonight is not about her, it’s about me.”

Cohen is a master of the awards show wind-up. He famously spilled the “ashes of Kim Jong-il” on Ryan Seacrest at the 2012 Oscars.

Watch some of his japes below...