Ultimate Guide To UK Ethical Jeans & Denim Brands

Looking for a pair of ethical jeans or denim? I’ve found the best UK brands in my guide to sustainable denim that cater to men, women, and unisex styles.

What’s the most hardworking item in your wardrobe? For me, it’s my jeans. A true workhorse, is there anything that jeans don’t go with?

Well, actually, do jeans go with sustainability? Are the two words mutually compatible? There’s a lot wrong with a standard pair of jeans. Let’s take a brief look, before looking into my guide to ethical jeans and denim.

What’s Wrong With Conventional Denim?

Jeans are one of the most commonly bought items of clothing in the UK. However, making a pair of conventional jeans is a dirty business.

From the environmental and social impact of growing cotton inorganically to the vast amount of water that it takes to make a single pair of jeans, right through to the associated water pollution.

However, these aren’t the only impacts that the denim industry has. Sandblasting jeans, to create a lived-in look can cause the deadly lung disease silicosis in workers who are involved in sandblasting. Sandblasting was banned in 2004, but nine years on from that factories were still found to be using sandblasting. Thankfully in 2025, there aren’t any recent reports so hopefully the fashion industry has fully moved on from this process.

Despite that ban, there are still other chemical threats to garment workers. Synthetic indigo dyes use chemicals known for their toxicity. These include formaldehyde and hydrogen cyanide, and continue to pose a risk. This means conventional denim is far from ethical.

Guide To The Best Ethical Jeans and Denim In The UK

Thankfully there are better ways to shop for jeans more ethically. If you are looking to buy ethical and sustainable jeans and denim clothing then check out my top choices below. Look out for exclusive discount codes from several brands!

The price range key for this guide is:

 £ = Under £50 | ££ = £50 – 100 | £££ = £100+

Fanfare

If you’re looking for denim that doesn’t just look good but does good too, Fanfare Label is one to know. This independent British fashion brand has built its name by giving waste a second life to create beautiful jeans and denim you’ll want to wear forever.

Rather than pushing endless newness, Fanfare focuses on what already exists. All of its jeans are made ethically in Portugal and the UK from rescued fabrics – from organic and recycled cotton to deadstock denim and wool offcuts that would otherwise be binned. Even the buttons and zips are sourced responsibly, using recycled paper and plastic bottles.

It also upcycles old jeans to keep clothes out of landfill – creating unique designs you won’t see anywhere else. And if you have a pair of jeans that you’ve fallen out of love with, you can even send them to Fanfare to be revamped with hand embroidery, fabric patchwork, or other creative options, giving your old jeans a new lease of life.

Circularity is also key. Every item is designed to last, and if your jeans ever need a repair, Fanfare has got you covered. You can even return worn pieces for recycling or redesign, closing the loop rather than sending it to landfill.

Get 15% off your first order when you sign up for the Fanfare mailing list.

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BAM

BAM’s supersoft jeans, for both men and women, are a great sustainable choice of jeans. Made from a blend of organic cotton and bamboo, this means its jeans are soft and comfortable to wear.

BAM says these jeans use 74% less water than the average pair of jeans to manufacture. And although producing bamboo fabric can be harmful to workers and the environment, BAM uses safer closed-loop processes.

Because of the rivets and hardware on conventional jeans, only the legs of conventional jeans can be recycled. What makes BAM’s jeans a great eco choice is that they’ve developed them in line with the Ellen MacArthur Foundation Jeans Redesign to be circular and environmentally friendly.

In practice, this means that BAM’s jeans have no rivets. They also have an un-screwable button. This means that once the zip is cut out BAM jeans can be fully recycled for denim with less waste.

Get 10% off your first order when you sign up for the BAM mailing list.

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E.L.V. Denim

E.L.V. Denim is on a mission to reduce overconsumption and waste in the fashion industry. As such, it makes luxury jeans and other items of denim clothing from 100% upcycled materials – including vintage jeans.

As the only denim brand in the world using 100% upcycled materials, the E.L.V Denim team scour vintage warehouses around the UK for good-quality denim, such as second-hand jeans that would otherwise be sent to landfill. These are then washed in a process that uses only seven litres of water, compared with the 10,000 litres needed to make a new pair of jeans through traditional fast-fashion production methods.

The jeans are then taken to the E.L.V Denim network of local East London ateliers, who then go about transforming the old unloved fabrics into new jeans using traditional denim methods. Here everyone is paid fairly for their work, and nobody works on a Zero Contract basis.

The ateliers work on a zero-waste basis, so every last part of the jeans can be used. Offcuts are reconstructed as patchwork fabrics or remade into new materials, such as paper, while smaller threads are turned into insulation.

Whilst the jeans aren’t vegan-friendly, the leather patches are made from remnants sourced from local leather factories. The team is also looking at ways to reuse discarded leather – such as from old leather sofas and other leather goods.

Get 10% off your first order when you sign up for The E.L.V. Denim mailing list.

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Seasalt

If you’re looking for stylish sustainable jeans in plus sizes, or with tall and petite options, then head to Seasalt.

Available in a range of styles and washes – including wide-leg, straight leg and barrel-leg jeans – there’s a lot of choice. These come in standard, tall and petite options, up to a UK size 28. Plus all come in at under £70.

This Cornwall-based brand was an early adopter of organic cotton – becoming the first fashion company to achieve Soil Association GOTS certification back in 2005. Since then, they’ve grown into one of the UK’s biggest purveyors of organic cotton.

But Seasalt hasn’t stopped there. Last summer it was recognised as a BCorp – meaning that it has been independently verified as balancing profit with a responsibility to look after people and the planet.

The only thing to look out for is that Seasalt’s stretch jeans contain elastane. This is a plastic fibre blended with the cotton to give stretch, but means that the jeans generally can’t be recycled when you are done with them. If you’re looking to avoid elastane, then my tip is to steer clear of the stretch pair and opt for Seasalt’s 100% cotton jeans.

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MUD

MUD Jeans – available in the UK at Komodo – makes stylish jeans for men and women from organic cotton and recycled denim. This helps to avoid waste and cuts down on water and CO₂ used. At the moment, its jeans contain 40% recycled denim. However, keep an eye out as MUD aim to launch the first jeans made from 100% post-consumer recycled denim. 

Rather than washing the jeans to create the wash, MUD uses innovative ozone and laser processes. This cleverly reduces the amount of water used to manufacture a pair of jeans by up to 75%. This also helps to reduce water pollution.

What’s also to love about MUD, is that jeans labels are printed instead of using leather. This means that its entire jeans range is cruelty-free and suitable for vegans.

What’s more, MUD takes back your old jeans once you are done. Here MUD will sell them if they are in good condition. If they are no longer wearable, MUD will recycle them by blending them with organic cotton to create new jeans for a more circular approach to denim.

Join the Komodo mailing list and get 10% off your first order.

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Nudie Jeans

Nudie’s 100% organic and vegan-friendly jeans are made ethically in Italy with sustainability in mind. From the use of Fairtrade organic cotton and its commitment to paying a living wage to its stance on the use of harmful chemicals and water, there’s a lot to love about Nudie.

What I especially love about Nudie jeans is that Nudie is all about longevity. So if your jeans need mending you can pop into their London shop to take advantage of their free repair service. And don’t worry if you are not London-based, look out for one of its pop-up repair events, or request a repair kit free of charge.

Once your jeans are worn out to the point of no return, you can send them back to Nudie and it will recycle them into new jeans. You’ll also get 20% off your next order.

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Oxfam Online

Want to shop for affordable ethical and sustainable jeans and support a charity at the same time? Then look no further than Oxfam Online. Here you’ll find a fantastic range of more affordable pre-loved denim, for men and women, in a vast array of sizes, styles, and colours.

Find a whole of brands – from designer to high street – at more affordable prices. Delivery is also just £3.95, no matter how many items you order. For extra peace of mind, returns are free. 

You also get the added bonus that your purchase is supporting a good cause – all profits go to supporting Oxfam’s work in alleviating global poverty.

If you are looking for other affordable ways to shop for ethical jeans, then do also check out my post on where to buy secondhand clothes online, for more budget-friendly preloved inspiration.

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Patagonia

Patagonia’s ethical jeans – available from Alpinetrek – are Fairtrade certified. This means that as well as paying the Fairtrade premium, to ensure producers are paid a fair price, Patagonia pays an additional premium for every Patagonia item that carries the Fair Trade Certified™ sewn label. That extra money goes directly to the workers at the factory, and they decide how to spend it.

Here workers have chosen to use the premiums to fund community projects, like health-care programmes or a child-care centre, or to purchase products they could not otherwise afford, like a laptop computer or a stove; or to take a cash bonus. 

What’s more, Patagonia’s ethical denim is designed to last and be repairable. Its website also gives advice on how to repair all Patagonia items, which is seriously useful. And for any clothing that can’t be repaired then you can drop it off at a Patagonia store for recycling or repurposing. 

Get £5 off your first order when you sign up for the Alpinetrek newsletter.

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Rokit

For preloved ethical denim, Rokit is another great online retailer to check out.

From the 1930s to 2010s vintage denim, Rokit stocks a wide range of styles, colours, and washes of jeans for men, women, and children, as well as unisex styles. And with a vast inventory (at the time of writing there were 963 pairs of jeans listed), covering sizes XXS to XXL, Rokit’s size inclusivity is something to applaud.

Never bought preloved jeans? Don’t worry, every item is cleaned and pressed before being added to Rokit’s webshop. This means you won’t get any nasty surprises when your jeans arrive.

Get 10% off at Rokit by using the discount code TAKE10 at the checkout.

How To Tell If A Jeans Brand Is Ethical

When it comes to assessing which jeans to include on this list, I used the following set of criteria to guide me. I used information available in the public domain and contacted brands for verification or further details if anything wasn’t clear.

Here’s my approach, so you know what to look for in other brands not included on this list:

Does The Brand Use Sustainable Materials?

Traditional denim production involves vast amounts of water, pesticides, and chemical dyes, which can cause harm to the environment. 

Ethical jeans brands prioritise the use of sustainable materials, such as organic cotton, and hemp. These eliminate the use of harmful pesticides, that harm wildlife and farm workers. 

Even better, recycled denim repurposes discarded jeans. This minimises waste and reduces resource usage – such as water.

Bamboo can also be a good choice – provided the brand processes denim in closed-loop facilities that allow them to recycle the chemicals and water used in this process.

Look for brands that shun the use of leather to make patches. There’s no reason why a pair of jeans shouldn’t be vegan-friendly. 

And look out for the use of non-toxic dyes, to help further reduce the impact of your new jeans on the environment.

Third-party certifications you can look out for to help verify a brand’s claims include:

• Global Organic Textile Standard (GOTS)
• Global Recycled Standard (GRS)
• Registration, Evaluation, Authorisation, and Restriction of Chemicals (REACH)
• Oeko-Tex Standard 100
• Bluesign Approved

How Ethical Is The Brand’s Supply Chain & Manufacturing Processes?

One way to tell if a brand is ethical or not is how transparent it is regarding its supply chain and manufacturing processes. 

A truly ethical jeans brand has nothing to hide and will give this information freely on its website. Many allow you to trace the journey of the denim from raw materials to the finished product.

Brands that provide little to no information could be a red flag that things aren’t quite what they should be.

In terms of manufacturing, ethical brands should ensure fair wages, safe working conditions, and reasonable working hours for their employees as a minimum.

To help verify any claims you can look out for the following independent certifications:

• Fairtrade 
• BCorp Certification
• Business Social Compliance Initiative (BSCI)
• Social Accountability International Certification (SA8000)
• Worldwide Responsible Accredited Production (WRAP).

How Environmentally Responsible Is The Jeans Brand?

Is the jeans brand working to reduce its environmental and social footprint? Things you can look for to tell if a brand is truly ethical include:

• Do they work to minimise waste in the manufacturing process?
• Does the brand offer a repair programme or information on how to repair your jeans?
• Do they offer a takeback scheme to resell or recycle your jeans once you’re done with them?
• Do they post your jeans in eco-friendly packaging?
• Do they support charities, by donating time, money or resources?

How to Make Your Jeans Last Longer

Of course, the most sustainable and ethical jeans are the jeans you already own. Thankfully there are some useful tips to keep your jeans in wearable condition for longer.

Laundry

How you wash and dry your jeans can make a huge difference to how long your jeans last. Here’s my laundry best practice for jeans.

Washing

Try to wash your jeans only when they need washing. In my guide to how often should you wash your clothes, it’s recommended that jeans should be washed after 4 to 5 wears. Minimum!

Of course, if they are dirty or smelly, then wash them. But if not, and you are not used to washing jeans so infrequently, and are self-conscious about smelling, then do so incrementally. After day 2, see how you feel about stretching to day 3. And so forth. You can do it, I believe in you!

When you do wash your jeans, wash them inside out. Turning jeans inside out when you wash them helps protect the outside of the jeans from friction and direct exposure to detergent. Both of these actions help prevent fading, making your jeans look better for longer.

Drying

Avoid the tumble dryer if you can. Heat can shrink or fade denim, and it can also cause damage to stretch denim fabrics. The best way to dry jeans is by hanging them up to air dry. If you do need to use a dryer, select a low or no heat cycle and use dryer balls to keep your jeans tumbling. Remove the jeans while they’re still slightly damp, then stretch the seams and hang them up to finish drying. By not over-drying jeans, you help avoid shrinkage and damage to the fabric.

In A Fix

Life happens. Your jeans might develop a rip or a tear. Instead of binning them, you can leave the rip or tear as is, and allow your jeans to develop a bit of character. The alternative is to fix your jeans.

If you’re not handy with a needle and thread, a tailor will be able to mend your jeans for you. If you do know your way around a sewing kit, then jeans can be patched up in a variety of ways. From patches and visible mending to invisible mending. YouTube has a great selection of ways to mend your jeans.

For more ideas, do see my guide on what to do with old jeans. This includes some clever upcycling and recycling tips for jeans that have come to the end of their life.

If you have any other tips on ethical jeans manufacturers or ways to prolong the life of your jeans, then do drop me a line!