Essential Waitrose & Partners Mackerel Fillets in Olive Oil

Waitrose & Partners, commonly known as Waitrose, is a British brand of supermarkets founded in 1904 by Wallace Waite, Arthur Rose, and David Taylor. The 'Essential Waitrose' line is their value-focused range, launched to provide high-quality everyday staples including sustainably sourced seafood.

The mackerel fillets are typically sourced and canned in coastal regions where mackerel is abundant, such as coastal Portugal or Morocco, though this can vary depending on seasonal supply chains. The brand is unique in the retail world as part of the John Lewis Partnership, which is the largest employee-owned business in the United Kingdom.

As of 2026 and beyond, Waitrose continues to operate as a subsidiary of the John Lewis Partnership. This employee-owned model ensures that profits are redistributed to its workers, known as partners, rather than external shareholders, maintaining its reputation as a premium yet ethical British retailer.