What the company or idea is
Tesco is a British multinational groceries and general merchandise retailer founded in 1919 by Jack Cohen in Hackney, London.
How it actually makes money
Tesco makes money by selling groceries and general merchandise at low margins, relying on high volume and rapid stock turnover.
What works
The self-service format (1948) and supermarket model (1956) worked because they reduced staffing costs, increased basket size, and aligned with rising car ownership and suburban housing — all before competitors adapted.
What does not
The ‘pile it high and sell it cheap’ method does not scale into differentiated service, premium branding, or margin resilience when cost inflation bites or competition shifts to convenience or experience.
What to take from it
Cohen built Tesco not around innovation in products or technology, but around ruthless simplification of the retail transaction: cut intermediaries, compress space, eliminate service labour, and standardise price signals.
Is it worth your time
Yes — it is a foundational case study in mass retail logistics, pricing discipline, and operational scaling in post-war Britain.





