List of supermarket chains in the United Kingdom - Wikipedia
Aldi, Lidl and Co-op take market share from big four UK supermarkets in run-up to Christmas | The Independent | The Independent
Tesco, Sainsbury's and M&S lack Christmas lustre with ailing sales
Big four no more: What next for UK grocery as Aldi overtakes Morrisons? | Analysis | Retail Week
UK's 'Big Four' Supermarkets All Maintain Double-Digit Growth: Kantar | ESM Magazine
The Big Four Supermarkets | The NX Group
Big four line-up changes as UK grocery price inflation accelerates again
Aldi pushes Morrisons out of big four supermarkets
Asda named cheapest 'big four' supermarket for trolley full of groceries | Express.co.uk
How the UK's 'Big Four' Supermarkets Perform for Customer Service on Twitter | by Dean McCann | HelpHandles™ Insight Series | Medium
Big four UK supermarket chains all lose market share despite growth in sales - Business Insider
Big 4 grocers to lose £1.9bn market share as discounters grow - Retail Gazette
Big Four supermarket merger may be more palatable for regulator | Financial Times
UK's top four supermarkets are all losing market share to these smaller rivals
BBC News - Rise of the supermarket: In graphics
Bad news for Big Four supermarkets on Twitter Prolific North
Aldi On Track To Join 'The Big 4' UK Grocery Brands By 2023
Big Four supermarkets boosted by bubbly sales but Germans Aldi and Lidl still steal the show and market share | This is Money
Big four 'emerge from intensive care' and poised to capitalise on improving economy | News | Retail Week
Big four UK supermarket chains all lose market share despite growth in sales - Business Insider
Expansion plans for major UK supermarkets - betterRetailing
Big Four supermarkets are getting nearer and nearer to you
Supermarkets not building two-thirds of planned new stores
Great Britain: Grocery market share 2022 | Statista
Morrisons best performing of big four supermarkets | Yorkshire Post
