All Warburtons products have been removed by Waitrose from its shelves in a row over performance.
The supermarket, which is part of the John Lewis Partnership, is reported in The Telegraph to have said the Bolton crumpet maker's "performance didn’t meet expectations".
However, Warburtons said that "quality is paramount" and that it has put "an awful lot of care" into the products its bakes.
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Waitrose said: "We stopped selling Warburtons products a year ago after their performance didn’t meet our expectations.
"We focus on fantastic products at great value that our customers love and we remain open to working with Warburtons in the future."
Warburton said: "At Warburtons, quality is paramount. We put an awful lot of care into the two million products we bake and deliver to over 19,000 stores across the country every single day.
"We know that consumers recognise the quality, and value of our products and that is why we are the number one bakery brand in the UK.
"It is a shame that Waitrose chose to delist us last year and we would of course love to be back on their shelves in the future."
In July, BusinessLive reported how a rise in costs to cope with the Covid-19 pandemic and overcome a major delivery driver shortage hit profits at Warburtons during its latest financial year.
The family-owned business posted pre-tax profits of £15.2m for the 12 months to September 25, 2021, compared to the £23.6m it achieved during the prior year.
The company, which is led by the fifth generation of the Warburton family, also reported a turnover of £567.9m, up from £556m.
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