Unilever is believed to have demanded a 10 per cent price rise due to the falling value of sterling, halting deliveries to Tesco when it refused.
The stand-off has left the supermarket facing a shortage of brands such as Surf washing powder, Comfort fabric conditioner, Hellmann’s mayonnaise, Pot Noodle and Ben & Jerry’s Ice Cream.
The move is understood to have hit online sales rather than products in store.
Shoppers trying to buy items from Tesco’s website on Wednesday were met with the message “Sorry, this product is currently not available”.
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It is thought a number of supermarkets are embroiled in the row with Unilever, which earlier this year posted profits of around £2 billion for the first half of 2016.
Unilever refused to comment on the dispute, but chief executive Paul Polman warned in June that a vote to leave the EU’s single market would increase prices for consumers.