Top 15 Sustainable Fashion Brands in the UK for Clothing in 2025

Fashion is one of the most polluting industries in the world, responsible for excessive water consumption, textile waste, and unethical labor practices. The rise of fast fashion has only worsened the problem, encouraging mass production of cheap, disposable clothing that harms both the environment and workers.

However, the fashion landscape is changing, with more consumers demanding sustainable and ethical alternatives. Sustainable fashion brands in the UK are leading this transformation by prioritizing eco-friendly materials, ethical supply chains, and responsible production methods.

This guide explores 15 of the best sustainable fashion brands in the UK in 2025, helping conscious shoppers make informed choices.

How Many Sustainable Fashion Brands Are There in the UK?

The UK has seen a significant rise in sustainable fashion brands over the past decade. While it is difficult to pinpoint an exact number, estimates suggest that there are over 100 brands actively working towards sustainability in different ways.

These brands range from small, independent labels focused on artisanal and handmade clothing to larger, well-established companies committed to ethical sourcing and circular production models. As consumer awareness grows, more brands are incorporating organic materials, fair trade practices, and zero-waste initiatives into their business models.

Why Is Sustainable Fashion More Important Than Ever?

Reducing Environmental Impact

The fashion industry is one of the largest contributors to carbon emissions, water pollution, and landfill waste. Sustainable fashion helps reduce this impact by using organic, biodegradable, and recycled materials that require less water and energy to produce.

Fair Wages and Ethical Labour Practices

Many fast fashion brands manufacture clothing in countries where workers are underpaid and subjected to poor working conditions. Sustainable brands prioritize fair wages, safe environments, and ethical supply chains, ensuring that the people who make our clothes are treated with dignity.

Encouraging Long-Lasting, High-Quality Clothing

Fast fashion encourages a “wear it once, throw it away” mentality, leading to millions of tonnes of clothing waste each year. Sustainable fashion promotes durability and timeless designs, helping consumers build a wardrobe that lasts.

Top 15 Sustainable Fashion Brands in the UK for Clothing in 2025

Here are some of the leading brands redefining ethical and sustainable fashion in the UK:

1. People Tree

A pioneer in fair trade and sustainable fashion, People Tree has been leading the ethical fashion movement since the early 1990s. The brand uses organic cotton, TENCEL™, and responsibly sourced wool while ensuring that workers receive fair wages and safe working conditions. People Tree partners with Fair Trade artisans, helping to preserve traditional handcrafting techniques while reducing carbon emissions from mass production.

2. Thought Clothing

Thought Clothing focuses on creating versatile, long-lasting wardrobe staples using sustainable fabrics like hemp, bamboo, and organic cotton. The brand is committed to a zero-waste production model and ensures that all dyes used are low-impact and non-toxic. Their designs blend style and sustainability, making them a great choice for those looking for comfortable yet eco-conscious fashion.

3. Rapanui

Rapanui is known for its circular fashion model, which allows customers to send back worn-out clothing for recycling into new garments. The brand uses renewable energy in its production process and operates a plastic-free supply chain. Based on the Isle of Wight, Rapanui is also one of the few brands with a fully transparent supply chain, allowing customers to trace the origin of their clothing.

4. Stella McCartney

One of the most famous names in sustainable fashion, Stella McCartney has been a leader in cruelty-free and environmentally friendly luxury fashion. The brand uses vegan leather, regenerated cashmere, and plant-based fabrics to create high-end designs without compromising ethics. Stella McCartney is also committed to carbon-neutral production and reducing water waste across its supply chain.

5. Baukjen

 

This London-based womenswear brand prioritizes low-impact production, biodegradable fabrics, and carbon-neutral operations. Baukjen produces clothing using GOTS-certified organic cotton, Ecovero viscose, and recycled materials. The company is a certified B Corp, meaning it meets high environmental and social standards.

6. Finisterre

A brand dedicated to sustainable outdoor and surf wear, Finisterre designs high-performance clothing using recycled polyester, organic cotton, and biodegradable packaging. Their products are made to withstand extreme weather while remaining environmentally responsible. Finisterre also invests in repair and reuse programs, allowing customers to extend the lifespan of their garments.

7. Ninety Percent

What sets Ninety Percent apart is its profit-sharing model, where 90% of its profits are donated to charities supporting environmental and social causes. The brand specializes in minimalist, everyday clothing made from organic cotton, TENCEL™, and low-impact dyes.

8. Beaumont Organic

Beaumont Organic is a luxury ethical brand focusing on high-quality organic cotton, linen, and sustainable wool. They work with artisans and small-scale producers to ensure fair wages and responsible sourcing. Their collections feature timeless, minimalist designs, perfect for those looking for eco-conscious sophistication.

9. Pangaia

Pangaia is a science-driven brand creating clothing from innovative materials such as seaweed fiber, organic cotton, and recycled plastic. The brand is committed to carbon-neutral operations and frequently invests in reforestation projects to offset emissions.

10. Komodo

One of the oldest ethical fashion brands in the UK, Komodo has been using organic hemp, wool, and upcycled fabrics since the 1980s. The brand is a member of 1% for the Planet, donating part of its revenue to environmental causes.

11. Raeburn

Raeburn is a leader in upcycling, transforming military surplus materials into fashionable, limited-edition clothing. The brand follows a zero-waste philosophy, ensuring that all scraps and offcuts are reused.

12. TALA

A sustainable activewear brand, TALA designs stylish gym wear made from recycled materials such as plastic bottles and textile waste. Their clothing is designed to be durable, high-performance, and affordable, making sustainable fashion more accessible.

13. Joanie Clothing

Joanie Clothing brings together vintage-inspired fashion and sustainability, incorporating eco-friendly fabrics and ethical manufacturing practices. Their collections include retro-style dresses, knitwear, and accessories.

14. Bibico

 

Bibico creates handmade, fair-trade clothing using organic wool, cotton, and natural fabrics. The brand supports artisanal craftsmanship and ethical employment in developing regions.

15. WAWWA

A Manchester-based streetwear brand, WAWWA produces clothing using organic cotton, recycled polyester, and solar-powered production. Their designs are influenced by urban sustainability, with a focus on practical, long-lasting pieces.

Sustainable fashion is no longer a niche concept—it is the future of the industry. The UK is home to an increasing number of eco-friendly fashion brands that prioritize environmental responsibility, ethical production, and long-lasting design. By choosing sustainable brands, consumers can contribute to reducing pollution, supporting fair wages, and minimizing textile waste.

The brands listed above represent some of the best options for ethical fashion in 2025. Whether you prefer casual wear, luxury fashion, outdoor clothing, or activewear, there is a sustainable brand that fits your needs. Making the switch to sustainable fashion is a simple yet powerful step towards a more responsible way of dressing.