UK semiconductor giant Arm could be axing up to 975 roles from its workforce following the collapse of its planned sale to Nvidia.

Last month Japanese conglomerate SoftBank, which currently owns Arm, said the deal had been officially ended due to “significant regulatory challenges”.

“Like any business, Arm is continually reviewing its business plan to ensure the company has the right balance between opportunities and cost discipline,” said Arm in a statement. “Unfortunately, this process includes proposed redundancies across Arm’s global workforce.”

The company said that, if proposals go ahead, it anticipates that around 12 to 15 per cent of people at the business would be impacted globally.

The Cambridge-based business has around 6,500 employees around the world.

SoftBank first agreed to sell Arm to the US chip maker in September 2020, but the deal has been beset by regulatory scrutiny since then.

In August, the Competition and Markets Authority (CMA) recommended an in-depth probe into Nvidia’s takeover of Arm.

The competition watchdog said that the merged business would have a “significant degree of control over key technologies for a range of sectors,” including artificial intelligence.

SoftBank said that Arm would now list publicly before the end of its financial year ending 31 March 2023.

SoftBank is set to keep the $1.25 billion deposit Nvidia initially paid it for the acquisition, which is set to "be recognised as profit" in its quarter ending March.

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