Supermarkets

Supermarkets offer an accessible and efficient one-stop shop for a wide variety of affordable, diverse and tasty goods. 75% of UK consumers say they visit supermarkets twice or more a week to do their food shopping. But how many aisles away are they from being ethical?

What is wrong with supermarkets?

Just eight supermarkets dominate 93% of the UK food retail market.

As of 2020, over a third of the UK grocery market share is commanded by Tesco (21%), Sainsbury’s (11%) and Asda (10%) combined. In 2019, the once prolific independent retailers made up just 5% of the entire food sector: in 1950 there were 43,000 greengrocers and in 2018 there were just 2,500.

“Supermarket chains play the role of gatekeeper, deciding how food is produced, the (low) prices paid to farmers and what fills the shelves,” as authors of the People’s Food Policy put it.

Based on convenience and the suggestion of low prices, supermarkets maximise profit margins often at the expense of people and the environment. Over time, this system has become synonymous with waste. Additionally, the disproportionate power in the hands of supermarkets means less power held by food producers.

In 2020, ethical consumer spending hit record levels in the UK with ethical food and drink leading the way. This indicates a demand for doing food shopping differently. While this guide is very critical of supermarkets as a whole, we recognise that, in a world where people are often overworked and underpaid, for some, convenience can be a bit of lifeline.

This guide will therefore lead you through the ways that supermarkets have, or haven’t, been addressing pressing ethical problems, and point to the best of the bunch. We’ve included several smaller, independent companies that are existing alternatives to the giant food retailers, as an example of what else is possible. We also provide recommendations on how to shop outside of the systemically problematic supermarket model.

The age of cheapened food

Since their beginnings, supermarkets have pioneered convenience and offered cheap food. Or, rather, they have promoted the image of cheap food.

Many farmers are forced to sell produce like milk and eggs at unfair prices, which can leave them at a loss. On average, UK farmers receive less than 10% of the value of their produce sold in supermarkets. Smaller UK farmers have been increasingly squeezed out due to competition with larger farms, and their numbers are in decline, pushing food production into fewer and fewer hands.

The environment is sacrificed too: an ongoing campaign led by RiverAction revealed Tesco to be sourcing chicken and eggs from farms polluting the River Wye (our forthcoming eggs guide will have more about this).

Globally, meanwhile, supermarkets have been criticised for exacerbating poverty along supply chains where, despite being food growers, farmers and land workers struggle to feed themselves. The reality is that food has been cheapened but something somewhere has had to pay.

Meanwhile, some supermarket directors are paid obscene amounts of money. Tesco for example paid its chief executive £1,525,000 in remuneration last year, whilst the highest paid executive of The Co-op Group received £2,220,000.

Supermarkets feed the junk food nation

Supermarkets are engineers of impulse buys: 40% of groceries in the UK are sold on promotion, and one in three UK food shoppers impulse buy unhealthy foods because they're on special offer, according to a new report from the Royal Society for Public Health.

Stores are typically laid out so that promotions are at high-traffic areas like aisle ends or near entrances. Over half of the calories eaten in the UK consist of ultra-processed food, which has led to food being the biggest driver of NHS spending.

But it isn’t only in-store marketing and promotions that risk public health. In 2019, Asda, Lidl and Marks & Spencer were found to have breached advertising rules by allowing ads for food and soft drink products high in fat, salt or sugar to be shown alongside videos on YouTube channels directed at children.

Increasing healthy food sales

Due to civil society pressure, Sainsbury’s, M&S, Lidl, and Aldi (own brand) now have targets for sales of healthy or ‘healthier’ food. They have begun setting specific goals and disclosing sales-based data for healthy vs. unhealthy food, fruit and vegetables, and different protein sources (animal and plant-based).

Several have taken responsibility for their questionable marketing tactics and made voluntary pledges to no longer sell confectionery at checkouts. Responding to investor pressure, Tesco has committed to increasing sales of healthy products as a proportion of total sales by 65% by 2025. What ‘healthy’ means to these supermarkets, however, remains unclear.

Additionally, the price of eating better needs to be addressed. Those with the lowest income in society would need to spend 74% of their disposable income on food to meet the Eatwell Guide costs – the Government’s official healthy eating guide. This is compared to only 6% of disposable income for the richest 10%.

Want some food with your plastic?

All supermarkets except Waitrose lost half a mark under Pollution and Toxics for collectively selling 896,853 tonnes of plastic packaging during 2019.

An investigation in 2021 by Greenpeace and the Environmental Investigation Agency found that M&S, Waitrose and Aldi performed best in taking action on plastic, with the latter two plus Sainsbury’s offering the most loose fruit and veg.

Some supermarkets have begun trialling packaging-free refill systems, including some branded goods, on shop floors such as M&S, Asda, and Waitrose. In addition, Asda, Lidl, Morrisons, Tesco and Waitrose all have targets to increase the proportion of products sold through reusable and refillable packaging.

Despite this sea of plastic reduction targets, voluntary measures by supermarkets have meant they’ve cut plastic waste production by just 2% since 2018.

Morrisons, for example – the first retailer to remove all plastic bags for loose fruit and veg – has experienced a 3% increase in total plastic use per unit of market share since 2018. One of the reasons for this is because many brands they sell are covered in plastic.

Supermarkets should do more to source branded produce with less unnecessary packaging, but they largely focus on own-brand plastic packaging. Campaigners have called on the government to introduce legally binding targets as well as compulsory reporting of companies’ plastic use to pick up the pace of reducing single-use plastic overall.

It is also important to be aware of the company’s overall environmental approach. Whilst Asda may be responding to the Attenborough-effect when it comes to plastic, for example, it continues to own 320 petrol stations, making large profits off fossil fuels, and since early 2021 is now owned by petrol station billionaires.

Turning down the heat on meat

The reduction of meat and dairy consumption in high-income, industrialised countries can help significantly reduce consumer-end emissions.

Our new Climate Gap report shows that UK citizens need to reduce meat and dairy consumption by at least 20% to meet UK climate targets.

Tesco currently stocks the biggest range of plant-based products and alternative dairy products of any UK retailer. Ocado’s meat-free options make up 40% of its ready meals, and Morrisons, Asda and Aldi doubled the size of their meat-free ranges between 2018 and 2020.

Nevertheless, despite the increase in popularity of plant-based foods, meat consumption is yet to decline, with purchases of chicken, beef and pork products having increased in 2020.

As a key cause of deforestation and land use conversion, The Food Foundation argues that, beyond increasing sales of meat-free products, it is crucial that the supermarkets reduce the sale of meat altogether. Yet so far, no UK supermarket has explicitly committed to reducing meat and dairy within their emissions reduction targets.

The Food Foundation also says supermarkets must address animal diets, which commonly rely on soya.

Supermarket ‘freshwashing’

A 2020 survey showed that over half (51%) of respondents believed food shopping from local stores and farm shops was better for the environment. Just under half believed shopping at these places can help them understand where their produce came from.

Supermarkets capitalise on the public’s general support for home-grown produce, but can work to muddy the waters of traceability. M&S’s organic milk says it’s “collected daily from a select group of British farms”, though finding exactly which farms is an odyssey.

Tesco sells blueberries supposedly from a ‘Rosedene Farm’. From the packaging, one would be forgiven for thinking this was a UK farm, which is odd because the origin label states ‘Morocco’. The farm on the label doesn’t actually exist.

A report by Feedback showed that some supermarkets use ‘fake farms’ to market products with small-scale farm imagery and give them the appearance of having been produced to higher standards than in reality.
 
The use of ‘fake farms’ on supermarket labelling highlights the importance of transparency around provenance. Whilst Tesco labels its tomatoes as being from ‘Nightingale Farms’, they are often sourced from Spain. As Ethical Consumer knows through multiple investigations, the Spanish region from which many supermarkets source tomatoes is rife with workers’ rights abuses from underpayment to unsafe conditions.

Ethical labels used by supermarkets

Awash with ethical labels and claims, supermarkets can befuddle the best intentioned. A good 400 certification schemes exist and can generate awareness and interest in the conditions in which food and drinks are grown and produced. However, the robustness of their criteria and monitoring varies greatly.

One comprehensive study of over 40 global multi-stakeholder initiatives over a decade rated Fairtrade as one of the strongest certification schemes, with producers having 50% ownership and voting power in the Fairtrade International General Assembly. Several of the supermarkets have committed to selling some Fairtrade products such as own-brand tea and bananas. The Co-op is the UK’s largest retailer of Fairtrade products as well as the world’s largest retailer of Fairtrade wine.

However, the study found that only 13% of the initiatives analysed included affected populations in their governing bodies. In 2017, Sainsbury’s dropped Fairtrade for its own ‘Fairly Traded’ label for tea to build “closer relationships with our suppliers” and were criticised by Fairtrade tea farmers for wanting too much control over shaping the certification standards.

Ethical issues in supermarkets and our ratings

Going food shopping with ethics in mind can be a mighty task. We rated companies on a broad spectrum of policies, including how they are tackling climate change, other environmental impacts, worker’s rights and animal welfare, through to the sourcing policies for cocoa, cotton, palm and timber. A detailed explanation of how supermarkets performed can be found below.

The smaller, regional independent stores, HISBE and Christine’s, food box companies Riverford and Abel & Cole, and the wholesaler Suma performed better across the board.

Asda, which was bottom of the Ethiscore table in the last supermarket guide has moved up due to improved environmental reporting and palm oil and timber policies, partly as it's no longer being majority owned by Walmart.

Beewashing

When it comes to exploiting bees for honey, many supermarkets fall short of ethical policies. Some supermarkets like Sainsbury’s did state positive approaches to beekeeping, including “no use of antibiotics” but such policies fail to address issues of swarm control, artificial queen rearing and queen clipping, which are issues raised in our guide to honey. All companies selling own-brand honey lost half a mark under Animal Rights, except Suma which had adequate policies.

M&S lost additional marks for having introduced a thousand honeybee hives to produce single-estate honey as part of a ‘farming with nature’ programme. Heavily criticised as ‘beewashing’ by those in the conservation science community, it was argued these (not endangered) honeybees would compete with endangered wild native pollinators over valuable food sources.

Climate change

Aldi, Asda, Booths, Ethical Superstore, HISBE, Iceland, Morrisons, Ocado, Planet Organic, Sainsbury’s, Spar, Suma and Tesco all received our worst rating for carbon management and reporting.

Booths and Spar failed to adequately discuss or report their climate impacts at all. Asda, Morrisons, Sainsbury’s and Tesco automatically got a worst for operating petrol stations (which is a shame because some were taking meaningful steps on their other carbon impacts). Sainsbury’s, the sponsor of the 2021 UN climate conference, is also owner of a bank without an apparent policy prohibiting financing of fossil fuels.

Whilst HISBE, Ethical Superstore, Planet Organic and Suma are definitely supporting organic produce, it was not felt they did enough to discuss their climate impacts or meet Ethical Consumer’s other criteria.

Both organic delivery companies, Abel & Cole and Riverford discussed a variety of ways they are committed to reducing agriculture’s carbon footprint and thus received a middle overall, along with Christine's.

Other companies that received a middle were Lidl, M&S and Waitrose all of which failed to report sufficiently on their indirect emissions, including those from their supply chains. Whilst often seen as ‘out of their control’, these emissions make up the most of supermarkets’ total, e.g. for Morrisons it is 97%. A lot of this comes from farming, which led Morrisons to commit to ‘net-zero’ farms by 2030. However, this target appeared to include offsetting.

Aldi, Asda, Iceland, Lidl and Morrisons lost additional marks under Climate Change based on being the lowest-scoring companies in a study by Feedback on supermarkets’ corporate policies and targets on meat and climate-impact.

Cocoa

The issue of child and slave labour in cocoa supply chains has been known since before 2000.

Companies are expected to have 100% of cocoa used in own-brand products certified by Rainforest Alliance or Fairtrade, or to only source from outside of West Africa where the issues of child labour are widely reported.

Companies with the best approach to cocoa sourcing were Suma, Co-op, Waitrose and Lidl.

Companies that lost a mark for having no or inadequate sourcing policies were Aldi, Asda, Booths, Iceland, M&S, Morrisons, Ocado, Sainsbury's, Tesco and Spar.

Some companies were not rated as they did not sell own-brand products containing cocoa - Abel & Cole, Christine's, HISBE and Riverford.

Cotton

Our cotton rating looks at two key issues: forced labour in Uzbekistan and Turkmenistan, and widespread use of GM cotton seeds.

All companies selling cotton products in this guide (Aldi, Asda, Lidl, M&S, Morrisons, Sainsbury’s and Tesco) were marked down under Controversial Technologies for failing to have adequate policies.

Aldi, M&S, Sainsbury's and Tesco were the only companies prohibiting the use of cotton grown in both Uzbekistan and Turkmenistan, and the rest were therefore also marked down under Workers’ Rights.

Since the last update, more evidence has also emerged showing the systemic state-sanctioned use of forced labour in cotton production in the Xinjiang Uyghur Autonomous Region of China. Reports suggest that all companies using cotton may be linked, but some in particular have been named, including Aldi and Lidl. M&S, Sainsbury's, and Tesco have signed up to the ‘End Uyghur Forced Labour’ pledge committing to withdraw from the region.

Environmental reporting

In order to get a best rating under this category, Ethical Consumer expected companies to show reasonable understanding of some of their environmental impacts and provide an independently verified environmental report including two future quantifiable targets to reduce their impacts.

Supermarkets largely discussed plastic, food waste, in-store energy consumption reduction measures, and refrigeration as key issues. However, some failed to discuss the role of agriculture sufficiently.

Planet Organic is largely organic but, due to lack of verified reports and quantifiable targets, it lost a full mark along with Booths, Ethical Superstore, Ocado and Suma.

Both the food box delivery companies, Riverford and Abel & Cole, committed to 100% organic and to never using air freight, and provided quantified targets to reduce delivery emissions and cut food waste. However, they did not provide evidence of independent verification of their data and therefore received a middle rating, along with Aldi, Asda, Iceland, Lidl, Morrisons, Sainsbury's, Spar and Tesco.

Best ratings went to HISBE, Christine’s, Waitrose, Marks and Spencer, and Co-op.

Palm oil

Our palm oil rating has changed since last time.

Spar, Booths, Ocado and Aldi did not have sufficient policies assuring that the palm oil in their supply chain is certified and thus lost a whole mark.

Lidl, Sainsbury’s, M&S, Morrisons, Tesco, Asda, Waitrose, Abel & Cole and Co-op lost only half a mark for having all palm oil and derivatives certified RSPO and for at least 50% of total ingredients being from a physically certified supply chain.

Suma, as a medium sized company with all palm oil certified and at least 50% of derivatives, scored middle.

Five companies didn’t lose any marks: Christine's, Iceland and Riverford for having a zero palm oil policy for own brand products, and HISBE, Ethical Superstore and Planet Organic for not producing own-branded products.

Pesticide use

A recent ranking launched by Pesticide Action Network UK (PAN UK) revealed that highly toxic pesticides are being used within the supply chains of all of the UK’s largest ten supermarkets. The chemicals in question include carcinogens and hormone disruptors, as well as bee-toxins and water contaminants shown to harm aquatic species.

Pesticides used in agriculture can often leave detectable traces of chemicals in, or on, our food known as ‘residues’. The residues detected on a food item will depend on which pesticides have been used and how persistent they are, in other words, how long they take to decompose.

Co-op and Waitrose both announced an end to the sale of pesticides in 2021 e.g. weedkillers (although fruit and veg produce will still potentially have residues on them).

PAN suggests that shoppers buy organic whenever possible. Shoppers who can’t afford or access a fully organic diet can find out which items to prioritise by checking PAN UK’s Dirty Dozen list of the most affected fruit and vegetables.

Full details of the ranking of supermarkets are available on the PAN UK website, and also a summary in the image below.

Supply chain management

Having a transparent and traceable supply chain is necessary to hold supermarkets accountable. However, only a small number of supermarkets have stepped up to the plate on this.

Co-op, Waitrose, Morrisons, Sainsbury’s, and Lidl scored best for meeting basic human rights criteria, stakeholder engagement, having robust auditing and reporting systems and tackling difficult issues in their supply chains.

HISBE, Christine's, Suma, Abel & Cole, Riverford, Asda, Tesco, M&S, and Aldi all scored a middle rating. Positively, HISBE emphasised paying their suppliers a fair wage and prioritised a local supply chain, whilst Riverford focused on maintaining long-term supplier relationships.

Booths, Ethical Superstore, Iceland, Ocado, Planet Organic and Spar all lost a whole mark for inadequate policies or a lack of publicly available information.

Tax conduct

Since the last guide Asda, Tesco, Sainsbury’s, and Lidl have not changed their ways in regard to likely use of tax avoidance strategies and thus all lost a mark under Tax Conduct

Timber

The production of timber and derived products is an obvious driver of global deforestation.

As with palm oil, Ethical Consumer’s rating looks beyond the use of certified products – such as FSC – seeking group-wide policies that set sustainable timber targets; have good minimum standards; show preference for reclaimed, recycled and certified products; exclude illegal timber; and evidence involvement in multi-stakeholder initiatives.

Companies that sell own-brand paper/timber products and have a good approach to timber sourcing include Lidl, Sainsbury’s, M&S, Tesco, Asda, Waitrose, Co-op, and Suma. Lidl has improved significantly since the last supermarket guide, having gone from a worst to best rating.

Our worst timber sourcing rating goes to Booths, Ocado and Spar.

Workers' rights

Poor pay and punitive working conditions are common on farms and plantations that supply to major UK supermarkets.

As shown in a 2022 Oxfam report, Behind the Barcodes, human rights are still at risk due to the drive to cut costs and negotiate the lowest possible prices with suppliers. The Oxfam scorecard rates six of the UK’s biggest supermarkets – Asda, Aldi, Lidl, Morrisons, Sainsbury’s and Tesco – and in the 2022 report found that things have improved in the four years of the report being produced, with Morrisons, Sainsbury's and Tesco all publishing their direct suppliers. The scorecard also found welcome improvements in gender-based rights abuses. There are also signs of improvement on tackling low wages.

Oxfam assessed the supermarkets’ publicly disclosed policies and practices in four key areas:

• transparency – including with consumers about where food comes from
• conditions for workers
• conditions for small-scale farmers
• tackling discrimination against women.

Tesco came top this year with 61%, and Asda bottom with 9%. However, Tesco is a very poor scorer in our ratings on 19 issues. Unfortunately the two high street brands who perform best in our ratings, Waitrose and Co-op, are not in the Oxfam report.

In Europe too, a joint supply chain investigation by Ethical Consumer and the Guardian found that many migrant land workers in Southern Spain are facing systemic labour exploitation as they work in a region that produces fruit and vegetables for all nine major supermarkets in the UK. These supermarkets lost half a mark for failing to take action on workers’ rights there.

Workers rights and the living wage

A study in April 2020 found that 45% of all workers at UK supermarkets were paid less than the ‘real living wage’ which currently stands at £11.05 per hour inside of London and £9.90 outside the city. In 2021, employees of the John Lewis Partnership, including Waitrose, claimed that 20.6% of them were not earning a living wage whilst hundreds of high-level staff were paid £100,000 or more.

Of the companies included in this guide, those that paid UK store-employees a living wage in November 2021 included Riverford Organic, Suma, Lidl, Aldi, Morrisons, Co-op and Sainsbury’s.

Abel & Cole and HISBE go the next step, as the only 'supermarkets' accredited with the Living Wage Foundation, which also guarantees the living wage to subcontracted staff.

A basket full of alternatives

As this guide has shown, shopping ethically in supermarkets can be a devil of a task. But, as the average person in the UK makes 221 trips to the supermarket every year, there’s a lot of opportunities to do things differently. After decades of civil society pressure, the big supermarkets still fail to deliver on social justice and environmental sustainability.

Thinking of ourselves as food citizens, rather than just consumers, can help build a different food future.

Our guides covers some smaller food retailers - HISBE, Ethical Superstore, Planet Organic, Riverford and Suma - but we also believe it's useful to provide a non-exhaustive list of places working on an alternative model of food retail to the big supermarkets. Click on the items below to find out more about each one.