Britain's troubled supermarket giant Tesco, which sank into a record loss after an accounting error, said Monday it has dropped its auditors of 32 years, PricewaterhouseCoopers.

In a statement, the group said it has appointed Deloitte as its new auditors after a tender process, in which PwC had agreed to not participate.

Tesco was hit by crisis last September, when it revealed that it had overstated profits by £263 million ($424 million, 333 million euros) as a result of accounting errors stretching back to before 2013.

Britain's Serious Fraud Office is probing the accounting blunder at Tesco, which is the world's third-biggest supermarket chain after France's Carrefour and global US leader Walmart.