Sainsbury's-Morrisons Merger Talks Explained: Scale, Debt and Regulation
Sainsbury's held merger talks with Morrisons between November 2025 and February 2026 before walking away.
The discussions concerned a multibillion-pound deal, The Guardian that would have combined the UK's second- and sixth-largest supermarket chains. The Guardian Reuters noted the talks on 5 October 2026, citing media reports that discussions had taken place earlier in 2026. Reuters
A combined group would have held a 23.6% UK market share, according to Worldpanel by Numerator analysts cited in October 2026. Market share means the portion of total grocery spending. Tesco held 27.8%. Sainsbury's alone held 15.2% as the second-biggest grocer. Sainsbury's operates 600 supermarkets and almost 900 convenience stores, with a workforce of about 140,000 people.
Morrisons was bought by US private equity firm Clayton Dubilier & Rice in 2021. Private equity firms buy companies, often using large borrowings. That takeover left Morrisons with more than £7bn in debt. Asda was sold in a £6.8bn debt-fuelled takeover in 2020, a deal also built on borrowing. Lidl overtook Morrisons in UK market share in 2026. Less than 1 percentage point separated Aldi and Asda, and Aldi was expected to overtake Asda to become the third-largest supermarket.
On 5 October 2026, Lidl GB reported a 10% jump in annual revenue to more than £13bn. Pre-tax profits, or profits before tax is deducted, rose by 30% to £245.5m in the year ending in February. Sainsbury's shares had fallen 3% so far in 2026 as of 5 October 2026, compared with a 6% rise for Tesco.
Sainsbury's £7bn bid to buy Asda in 2019 was blocked by the competition watchdog. The Competition and Markets Authority, the UK body that reviews mergers, said it would reduce competition and lead to higher prices. In August 2026 the Competition and Markets Authority provisionally found that Aldi and Lidl no longer qualified as "limited assortment discounters". The watchdog is due in October 2026 to publish its final ruling on whether Aldi and Lidl should be classified as "large grocery retailers".
Sainsbury's agreed in summer 2026 to sell Argos for £120m to focus on its core food business. It had bought Argos for more than £1bn in 2016. The sale came under chief executive Simon Roberts, who had been boss for six years as of October 2026. Morrisons bought Safeway in 2003, after which dozens of stores changed hands.
The broader context here is why a Sainsbury's-Morrisons combination was explored and why it did not proceed. Industry watchers agree that either Asda or Morrisons, or both, could disappear within a decade. Two mid-market operators carry large debts and are losing ground to discounters, while a better-funded traditional grocer sought scale against Tesco. A 23.6% combined share would still have trailed Tesco, but it would have tested the CMA's tolerance after the 2019 prohibition and its pending decision on discounter classification. Sainsbury's decision to walk away leaves that question unresolved, while the debt loads at Asda and Morrisons and the continued advance of Aldi and Lidl keep consolidation on the agenda for UK grocery.
