FILE PHOTO: Waitrose shopping carts are seen outside a supermarket in west London July 6, 2010. REUTERS/Toby Melville

LONDON (Reuters) - Amazon AMZN.O made an unsuccessful informal attempt to buy upmarket British supermarket chain Waitrose late last year, the Sunday Times newspaper reported.

Citing an unidentified source, the newspaper said Amazon’s vice president of special projects, Ajay Kavan, approached an unnamed director of John Lewis Partnership, the department store-led retail group of which Waitrose is part.

One director had several “enormously informal” discussions with Amazon in November but John Lewis’s chairman, Charlie Mayfield, refused to discuss a tie-up further, the newspaper said.

The paper also quoted Mayfield denying on Saturday that there had been an approach.

“These times are ripe for speculation, but there has been no approach to the partnership by Amazon regarding Waitrose, and nor would I expect there to be,” Mayfield said.

Britain's retail sector was rocked last week when it emerged that Sainsbury's SBRY.L was seeking to take control of Walmart's WMT.N Asda unit for around 7.3 billion pounds ($10 billion), a move that will create Britain's biggest supermarket if approved by regulators.

Amazon bought Whole Foods, an upmarket U.S.-focused supermarket, for $13.4 billion in mid-2017.