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Comparison

Tesco vs Asda

Tesco and Asda both land on Depends.

Tesco

Depends

Confidence: Medium

Tesco is a supermarket, not software: it fits UK households doing weekly grocery shops, especially Clubcard members.

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Asda

Depends

Confidence: Medium

Buy if you want cheap weekly groceries and will check your receipts.

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Tesco versus Asda
Compare	Tesco	Asda
Verdict	Depends	Depends
Best for	UK weekly grocery shops	Budget weekly grocery shops
Who it's not for	Anyone outside UK/Ireland delivery zones	Shoppers wanting premium fresh produce
Privacy	Multiple historical incidents (2014, 2016, 2021); no new breach evidence in the sources reviewed.^⁸	Consumer site with a patched 2016 payment flaw and 2024 breach warnings; no critical CVEs for Asda itself (ASDA-Soft CVEs are unrelated Delta Electronics software).^⁴
Support quality	Only review counts found, no service detail	Charging errors and service complaints dominate reviews
Public sentiment	Shoppers value the range and delivery convenience but repeatedly complain that prices feel volatile, rising, and Clubcard-dependent.	Shoppers praise low prices but repeatedly flag fresh produce quality, charging errors, and poor service.¹⁰
Biggest gotcha	Breach history: Tesco Bank 2016, Clubcard accounts, 2021 hack attempt^⁸	Customers report being charged incorrectly in-store and online; check receipts carefully.

Pick Tesco when

UK weekly grocery shops
Clubcard deal hunters
Online delivery regulars

When Tesco is not a fit

Anyone outside UK/Ireland delivery zones
Buyers evaluating software . this is a supermarket
Shoppers prioritising stable, low prices

Pick Asda when

Budget weekly grocery shops
Big-basket online deliveries
One-stop family shopping incl. George clothing

When Asda is not a fit

Shoppers wanting premium fresh produce
Anyone needing reliable customer service
People burned by till/online charging errors
Buyers wanting organic or specialist ranges

Sources

Tesco.com Trustpilot reviewstrustpilot.com
review
Tesco reported to competition watchdog over pricingreuters.com
news
Tesco website and app back online after hack attempttheguardian.com
security
Tesco apologises after software issue hits website and appbbc.com
news
Tesco changes Clubcard plan after complaintsthe-independent.com
news
Tesco popularity & fame . YouGovyougov.com
review
Who Are Tesco's Main Competitors? . Investopediainvestopedia.com
news
Tesco Bank Suffers Data Breachamtivo.com
security
Everyday Low Prices . Tesco Groceriestesco.com
official
Trustpilot reviews of Asda groceriestrustpilot.com
review
2,681 Reviews.io reviews of asda.comreviews.io
review
Honest opinions on Asda . Redditreddit.com
review
Why don't more people shop at Asda? . Redditreddit.com
review
Asda company factscorporate.asda.com
official
Asda offers, Rollback and Price Matchasda.com
official
Asda Scan & Go on Azure . Microsoft case studymicrosoft.com
official