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The impact of climate change affect all of us and the scientific evidence is clear - urgent action is needed by everyone.

Every human activity has a carbon footprint. We all need to cut emissions to avoid the worst consequences of climate change. No company can hope to prosper in a world where we continue to plunder resources and pump CO2 into the atmosphere at the rate we are today. And there are practical considerations for our business: energy costs, the availability of raw materials, new markets and new legislation. 

Commitments and targets
We have reset our Plan A sustainability programme with a focus on becoming a net zero Scope 3 business across our entire supply chain and our products by 2040. We've set out a detailed roadmap using science-based targets to support us on this journey. Reaching net zero requires rapid change in how we run our business and our first goal is to rapidly reduce our footprint by a third by 2025 and more than half by 2030. 


The gross (Location-based) emissions from M&S global operations in 2021/22 were 314,000 tonnes of carbon dioxide equivalent (CO2e). Down 51% against the 640,000 tonnes from when we first started to measure it in 2006/07.

The 2021/22  Market-based calculation of emissions which allows deductions for renewable energy was 190,000 tonnes, down by 70% against 2006/07.

But we know that our carbon impact goes beyond our operations. Once our supply chains, business partners and customers activities are added to the calculation our total footprint is around 5.7 million tonnes of CO2e. To reduce these emissions we're working with a range of partnerships including WRAP's Courtald 2025 programme and Sustainable Clothing Action Plan (SCAP) as well as the global Sustainable Apparel Coalition.

We report our greenhouse gas emissions annually in accordance with UK government and international corporate greenhouse gas reporting guidelines. This data is independently assured and submitted annually to the Carbon Disclosure Project.

Read our 2020/21 climate performance report for more detail on how we review risks, costs and regulations associated with climate change and our actions and performance since 2007.

Understanding and taking action on our greenhouse gas emissions through avoidance, substitution or compensation measures
Avoiding or eliminating emissions
Our first priority is to reduce or eliminate emissions at source. This is where the most significant carbon benefits can be realised by reducing embodied impacts and improving energy efficiency. By embodied impacts we mean the resource and energy inputs in the manufacture, transportation and delivery (to the point of use) of a material, product or service – and improving energy efficiency.

We aim to design our buildings in ways that minimise carbon emissions and energy demand, over and above what’s required by legislation. The design and construction related activities that most influence our emissions are:

  • Location, orientation and design of our stores
  • Transportation of materials, goods and people
  • Energy sources we use to provide heating, cooling and electricity
  • Generation of waste and methods of disposal
  • Choices we make for our building and fit-out materials
Embodied carbon in materials like steel, concrete, and tiles, significantly contributes to the carbon footprint of store retrofits and construction. We aim to address the carbon hotspots we can control or influence – particularly walls, ceilings, and floors.
Our energy strategy centres around 2 basic principles: 

1) Reduce the amount of energy we use within our global built environment

2) Source as much energy as possible from renewable, small-scale sources

Since the initial launch of Plan A in 2007, we have been on a journey to transform our business to reduce our greenhouse gas emissions. We have achieved this through monitoring our energy use, giving each of our stores individual targets to achieve, pioneering new low carbon technologies and investing in energy efficient equipment.

We operate in accordance with an M&S Group wide Energy Policy and our energy management systems and processes in the UK and the Republic of Ireland are certified to ISO 50001: 2011 the international Energy Management Systems standard.

Renewable energy

We source all our electricity in the UK and the Republic of Ireland from renewable sources. We are also making good progress generating renewable energy in our own estate - in 2015, M&S launched the largest single roof mounted solar panel array at our Castle Donnington warehouse; and in 2017 we launched M&S Energy Society, a community benefit society that generates renewable electricity from solar panels installed on 8 M&S stores. We continue to look for opportunities to build on our existing 16 solar PV sites and are developing a pipeline of opportunities for future development.

Energy Efficiency

We try to make sure store retrofits and construction are as energy efficient as possible. We also aim to procure fixtures, fittings and equipment that meet best practice energy efficiency standards.

We believe we can make significant savings and improve performance through smarter staff engagement. 

In the UK and the ROI we achieved a 47% improvement in energy efficiency between 2020/21 and 2007.


We’re committed to reducing store refrigeration gas carbon emissions by 80% by 2025 and phasing out HFC refrigerants.

In the UK and Republic of Ireland we've reduced refrigeration and air conditioning emissions by 72% since 2007. 

We’ve switched to the use of natural refrigerants instead of more damaging HFC gases in all new UK and Republic of Ireland refrigeration system installations.

Low carbon technologies

We’ve installed one of the UK’s largest single roof mounted solar panel array, at our Castle Donington distribution centre, PV solar panels at eight stores and a small number of biomass boilers.
Developing programmes to reduce supply chain emissions
Supplier programmes
We are working with our supplier partners to minimise air pollution and GHG Emissions. Supplier partners are required to minimise air pollution and to develop and implement plans to support M&S to reach its goal of reaching net zero emissions by 2040. Supplier partners are encouraged to assess their own climate related risks and implement adaptation and resilience plans.

Clothing and Home products

We have committed to Textiles 2030, through which we are collaborating to reduce the aggregate GHG footprint of products sufficient to limit global warming to 1.5°C (40-50%) in line with the Paris Agreement on climate change.

We are a member of the Sustainable Apparel Coalition and require our suppliers to complete the Higg Index FEM to measure and improve their environmental performance. We're also members of the CanopyStyle programme, protecting forests through our choices of fabric.

In 2020/21 all the cotton used to make M&S clothing was sustainably sourced. 

Food products
We participate in WRAP's Courtauld 2025 programme and the Meat in a Net-Zero World Initiative. We also work with the Forest Stewardship Councul, Roundtable on Sustainable Palm Oil (RSPO) and Round Table on Responsible Soy (RTRS).
Engaging employees and customers in activities which directly or indirectly reduce emissions
Improving the sustainability of our products

Back in 2007, we were one of the first companies to encourage our customers to lower washing temperatures to 300C, saving around 40% energy per wash. We even introduced labels on our clothing with 'Think Climate – Wash at 300C'. This campaign persuaded 15% of our customers to wash at lower temperatures, saving 50,000 tonnes of CO2e per year.

In partnership with Oxfam, and building on our existing clothes recycling programme, we launched Shwopping in 2012, to encourage customers to donate an unwanted item of clothing every time they bought a new one. Through Oxfam, donated clothes are resold in one of their stores or on their website, forwarded on to those who need them in developing countries, or recycled and used to make new material (which businesses like M&S can make into new clothes). Absolutely nothing goes to landfill. Oxfam uses the money raised to help people around the world overcome poverty.
M&S Energy
In 2008, we launched M&S Energy to provide competitively priced consumer and community electricity and gas. M&S Energy is now an approved green energy provider, meaning the energy it supplies to customers is matched with renewable sources at no extra cost.

Working with others
Listening, learning, responding and working in partnership is an important part of how we do business. 

Our collaboration with key partners across the retail industry include working with WWF, The Consumer Goods Forum, The British Retail Consortium, WRAP’s Courtauld Commitment 2030, Textiles 2030 and the National Farmers Union. We are also a member of the Science Based Targets initiative’s Business Ambition for 1.5°C, the UN’s Race to Zero campaign and the British Retail Consortium’s Climate Roadmap.