12 UK-Based Sustainable Swimsuit Brands to Know

We reviewed the best sustainable swimwear brands based in the UK. These stylish, eco-friendly pieces will elevate your beach wardrobe and help protect the planet. 


~48 pieces ranging from $47-$271 

Finisterre has been creating sustainable swimwear in Cornwall since 2003. It became a certified B corp in 2021. As a certified B corp, its sustainability and fair business practices have been evaluated by an independent third party and meet the highest standards. 

The company’s take-back initiative encourages consumers to trade in old Finisterre pieces for a discount on their next order. The old pieces are repaired or upcycled into new products. 

Finisterre designs boldly colored swimwear and wetsuits for swimmers who take part in high-impact water sports. The brand integrates sustainable materials like Yulex® natural rubber, recycled ocean plastics, recycled fabrics, organic cotton, hemp, and ethically sourced merino wool into its textiles. 

The brand is transparent about its supply chain and lists the factories that make their products. 

Slo Active

~11 pieces ranging from $67-$445

Slo Active is an eco-friendly, luxury swimwear brand based in London. Its mission is to make purposeful, impactful swimwear. The company donates to Earth to Ocean and plants mangrove trees to help offset carbon emissions.  

Swimwear is black with classic cuts, so it can last beyond a season. Pieces have Yulex® natural rubber sourced from hevea trees. This soft material has Forest Stewardship Council certification, which means it was ethically and sustainably sourced. 

Slo Active also makes swimsuits with stretchy EVO® fabric made from castor bean plants. Pieces have Oeko-Tex Standard 100 certification, which means they’ve been evaluated for toxins. 

Fourth Element

~67 pieces ranging from $9-$168 

Fourth Element is a sustainable swimwear and surfwear brand in Cornwall. The brand designs high-performance swimwear with recycled fishing nets and plastic bottles. Fourth Element has innovative Ocean Positive products that are created with ocean waste.

Swimsuits and wetsuits are made with ECONYL® yarn, REPREVE®, recycled rubber, limestone neoprene, and Yulex® rubber. These materials are sustainable and minimize environmental impact.   

The brand also uses compostable packaging and contributes to ocean-related charities. 


~50 pieces ranging from $55-$195 

Founder Vicki Jones envisioned a sustainable swimwear brand with beautiful craftsmanship and high-quality design. Her UK-based swim and surfwear brand, sand&palm, uses responsibly sourced materials to in its swimsuits.

Fabrics like ECONYL® are made from recycled waste. The production process uses non-toxic dyes. 

Sand&palm has a range of cuts and prints to choose from. Pieces are handmade by artisans onsite at their Cornwall studio, making each swimsuit exclusive. 

Tide + Seek

~76 pieces ranging from $13-$121 

Tide + Seek is a fun, sustainable swimwear brand from Cornwall. Swimsuits have bright, eye-catching prints in a variety of cuts and styles. Designs have bold graphic patterns and geometric swirls for a playful look. They’re printed digitally, which produces less waste.  

These swimsuits have eco-friendly REPREVE® fabric constructed from 100% recycled plastic. Swimwear is long lasting, as well as UV and chlorine resistant. 

The company is transparent about its supply chain. It takes five plastic bottles to make one swimsuit. Tide + Seek works with manufacturers to ensure fair wages and labor practices for workers. 

The brand implemented a recycling program. Consumers can mail their old Tide + Seek garments back to the company for a 10% discount code. Then a recycling company reuses the fabric.  

Blu Wild

~78 pieces ranging from $52-$66

Marine-biologist Mads Sinclair founded Blu Wild in 2018. Her goal was to start a swimwear brand that protected nature. Blu Wild has affordable, high-quality, eco-friendly swimwear. Ocean and marine life inspire the print designs.  

The collection has a range of bikinis and one-pieces, with timeless cuts and designs. These high-quality swimsuits can be worn long-term. Textiles are consciously sourced from plastic bottles and nylon fishing nets.

These recycled materials are spun into yarn to create fabrics like REPREVE® and ECONYL®, and recycled polyester. 

This UK-based brand is transparent about its supply chain and ethical production standards. Blu Wild is an ocean-friendly choice for swimwear. 


~15 pieces ranging from $146-$271

HartiSwim is a stylish, eco-conscious swimwear brand from the British Isles. Tessa Hartmann, an entrepreneur and TV personality with a fashion background founded HartiSwim in 2022. Hartmann acknowledged the waste and carbon emissions produced by fast fashion and found a sustainable solution.   

HartiSwim’s luxury bikinis and one pieces are made with REPREVE® fabric from recycled bottles. Prints have glamorous pop-art designs. They are wearable art. These statement pieces are painted by hand and digitally printed, emitting fewer carbon emissions.

Deakin & Blue

~54 pieces ranging from $96-$166

Swimwear brand Deakin & Blue says its swimwear fabric is rubbish. That’s because it’s made of ECONYL®, which 100% recycled material. The brand’s founder, Rosie Cook, wanted to create a sustainable brand that didn’t compromise style and quality. 

Swimsuits have a tailored, durable fit meant to withstand high-impact water activities. This size-inclusive brand offers minimalist choices in solid colors.

Products are made in London, lessening the company’s carbon footprint. The brand ensures safe, ethical working conditions. Deakin & Blue partners with eco-friendly suppliers. It gives back to charities that support women’s health and environmental impact.  


~20 pieces ranging from $60-$141

F & WILD is a swimwear brand on a mission to create sustainable, ethical swimwear. Swimwear is designed and handcrafted by artisans in London, reducing the company’s waste and carbon footprint.

The brand adheres to a slow fashion ideology. It creates long lasting, timeless pieces instead of releasing a new collection each year. 

F & WILD uses ECONYL® recycled fabric to create iconic pieces. There are versatile collections of bikinis and one piece swimsuits in bold prints and solid colors. 

Amie Lou London

~10 pieces ranging from $77-$159

Amie Lou London is an affordably priced swimwear brand from the UK. The company is transparent about its supply chain. 

Swimwear is made from sustainable ECONYL® textiles. The company manufactures pieces in small batches in London-based factories. Amie Lou London’s products are locally made to reduce environmental impact. Leftover fabric is used to make accessories to minimize waste.        

Pieces have a vintage cut and style, in white, blue, and orange hues. Swimsuits have delicate crochet trim. The trim is handcrafted by an on-site seamstress for an elegant, bespoke touch. Workers are paid fair wages, emphasizing the brand’s belief in ethical fashion.  

Pursuit The Label

~13 pieces ranging from $146-$238

Pursuit The Label is a London-based, eco-conscious swimwear brand. The company’s mission is to create superior garments that have a positive impact on ocean pollution. 

The brand’s collection has a variety of romantic one-piece swimsuits with innovative cutouts and designs. The designs are playful and sustainably made with an ECONYL® fabric that is 78% recycled polyamide. Swimsuits are made from recycled plastic and fishing nets.

Pursuit The Label sells limited collections in small batches, to reduce waste. All pieces are ethically manufactured in the UK.   

Paper London

~33 pieces ranging from $46-$260

Paper London is a luxury apparel brand from the UK that makes sustainable swimwear. Solid swimwear is woven with ECONYL® yarn and textured swimsuits have REPREVE® textiles. These recycled fabrics keep pollution out of oceans and reduce carbon emissions.   

Swimsuits have playful, tropical colors with solid and plaid details. Many cuts are asymmetrical and ruffled, giving pieces a vintage elegance. 

The brand’s recycling program allows consumers to return pre-loved pieces for a 20% discount. Paper London furthers its sustainability practices by donating to environmental causes and planting trees to offset the carbon emissions for each purchase.

There’s more

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Danielle Cappolla is a freelance fashion and beauty writer who contributes to publications around the world. She enjoys writing about new innovations in the fashion industry.

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