London is a city where quality food meets international flavour, and when it comes to seafood, the standards are exceptionally high. Whether you’re a restaurateur sourcing fish for an elite menu or a home cook craving fresh catch for the weekend, finding the right seafood supplier is crucial. London’s top seafood companies don’t just sell fish they represent a culture of freshness, sustainability, and culinary passion.
This blog dives into the top 10 seafood companies in London, exploring what makes them stand out in an increasingly competitive market.
What Makes a Seafood Company Stand Out in London?
With so many options available, it’s essential to understand what differentiates an average seafood business from an exceptional one. Quality and freshness are the foundation. Leading seafood companies source their products daily, often directly from UK coastal fisheries, and use carefully monitored cold-chain logistics to preserve taste and texture.
Equally important is a commitment to sustainability. London consumers are increasingly conscious of where their food comes from, prompting suppliers to adopt practices that support responsible fishing and marine biodiversity. Certified sourcing through organisations such as the Marine Stewardship Council (MSC) has become a key marker of trust.
Beyond these fundamentals, customer service and flexibility play a huge role. Companies that offer tailored solutions for restaurants and home delivery alike, with online ordering systems and reliable support, consistently rank higher with consumers. Finally, innovation whether in packaging, delivery, or seafood processing gives the top players a distinctive edge.
Which Are the Top 10 Seafood Companies in London?
1. The Chelsea Fishmonger – “Luxury Seafood With a Personal Touch”
The Chelsea Fishmonger is one of London’s most prestigious seafood retailers, known for its artisan-level fish preparation and exquisite presentation. Located in the upscale Chelsea district, the shop has been serving customers for over 30 years with an emphasis on quality and heritage.
Their offerings include hand-dived scallops, wild British fish, and a fine selection of house-smoked delicacies. The team provides expert advice on preparation and cooking, creating a personalised experience for each customer.
Their long-standing relationships with sustainable fisheries ensure ethical sourcing. Every product is carefully selected and filleted in-house. The shop is favoured by locals and gourmet chefs alike.
Signature Selection
Renowned for expertly smoked fish and premium wild-caught options.
Best Matched To
Perfect for fine diners and chefs who value traditional craftsmanship.
Pricing: Moderate to high, based on catch and season.
- Website: https://chelseafish.co.uk
- Phone: 020 7351 0777
- Address: 10 Cale Street, Chelsea, London SW3 3QU
- Email: info@chelseafish.co.uk
Review: ★★★★★
“A stunning selection of premium seafood every visit feels like stepping into a boutique market.”
2. Chamberlain & Thelwell – “Tradition That Tastes Fresh”
Established over 70 years ago, Chamberlain & Thelwell has become one of London’s most trusted wholesale seafood companies. They specialise in supplying fresh and frozen seafood to many of the capital’s Michelin-starred restaurants and top hotels. The company sources from both UK and global fisheries, offering a wide array of fish, shellfish, and exotic species.
Their warehouse in north-west London is a hive of early-morning activity, preparing bulk orders for daily delivery. A dedicated team handles custom requirements and ensures tight cold-chain logistics. While not open to the public, their influence behind the scenes is undeniable. They’re known for consistency and dependability.
Core Expertise
Wholesale supplier of premium fish and restaurant-grade shellfish.
Best Suited For
A reliable choice for large hospitality venues and executive kitchens.
Pricing: Available via custom B2B quotes.
- Website: https://www.chamberlainandthelwell.co.uk
- Phone: 020 8965 6665
- Address: Unit 8-10, Oliver Business Park, London NW10 7JB
- Email: sales@chamberlainandthelwell.co.uk
Review: ★★★★☆
“They’ve been supplying us for years always on time, always high quality.”
3. Moxon’s Fishmongers – “Bringing the Coast to the Capital”
Moxon’s Fishmongers has earned its place as a favourite among London seafood lovers, with shops in Clapham, South Kensington, East Dulwich, and Islington. The company has built a reputation for sustainability and freshness, sourcing fish daily from British waters and European coasts.
Beyond fresh fish, Moxon’s offers house-made fishcakes, sauces, and an impressive range of smoked and cured items. Each shop has a unique charm, blending old-school fishmongery with modern culinary insight. Their knowledgeable staff offer guidance for every purchase, whether you’re a novice cook or a professional chef. Moxon’s commitment to quality and ethical sourcing is a major draw.
Product Specialty
Best known for house-smoked fish and seasonal British catch.
Ideal Customer
Suited to conscious shoppers seeking fresh, sustainable seafood.
Pricing: Mid-range with transparent pricing by weight.
- Website: https://www.moxonsfreshfish.com
- Phone: 020 8772 2020
- Address: 149 Lordship Lane, London SE22 8HX
- Email: info@moxonsfish.com
Review: ★★★★★
“From scallops to sauces, everything is fresh, clean, and thoughtfully sourced.”
4. James Knight of Mayfair – “Seafood Worthy of a Royal Warrant”
James Knight of Mayfair is a name synonymous with prestige in the seafood world. Holding a Royal Warrant as fishmongers to His Majesty the King, they supply the highest calibre of fish to five-star hotels, embassies, and fine dining establishments.
Their offering spans whole fish, portioned fillets, and shellfish all prepared to bespoke client specifications. The company maintains top hygiene standards and is committed to traceability and responsible sourcing.
Clients appreciate their tailored approach and discretion, hallmarks of their luxury positioning. Their operations reflect efficiency, exclusivity, and legacy qualities sought after by elite clientele.
Prime Offering
Luxury-grade, bespoke seafood preparation and distribution.
Best Fit
Recommended for premium hotels and fine dining institutions.
Pricing: Premium; varies by order and preparation type.
- Website: https://www.james-knight.com
- Phone: 020 7720 1999
- Address: 7-9 Timbermill Way, London SW4 6LY
- Email: enquiries@james-knight.com
Review: ★★★★☆
“They deliver tailored, filleted seafood to our exact needs consistently excellent.”
5. Wright Brothers – “From Shore to Plate, Sustainably”
Wright Brothers started as shellfish suppliers and have grown into one of London’s most respected seafood names. With restaurants in Soho, Battersea, and Borough Market, and a wholesale arm, they control the full supply chain from sea to service. Their core strength lies in native oysters, British shellfish, and promoting sustainable harvesting.
They’ve partnered with small UK fisheries to ensure traceability and eco-responsibility. Their retail and wholesale channels mirror the same quality, making them a preferred choice for chefs and seafood connoisseurs. Wright Brothers delivers not just product but provenance.
Flagship Product
Specialists in British shellfish and oysters with sustainable sourcing.
Most Suitable For
An excellent match for restaurants with a focus on British seafood.
Pricing: Mid to premium, based on volume.
- Website: https://www.wrightbrothers.co.uk
- Phone: 020 7481 7788
- Address: 56 Borough Market, London SE1 1TL
- Email: info@wrightbrothers.co.uk
Review: ★★★★★
“We rely on them for fresh oysters daily they never miss a beat.”
6. The Fish Society – “Every Fish Imaginable, Delivered”
The Fish Society is the UK’s most diverse online seafood retailer, delivering nationwide and widely used in London. Founded over 25 years ago, they offer more than 200 seafood products, including hard-to-find species and global delicacies.
Their model focuses on flash-frozen seafood that is preserved at peak freshness, maintaining texture and flavour. Their website is extremely user-friendly, with nutritional info, prep advice, and recipes.
From monkfish cheeks to Japanese uni, they’ve built a loyal customer base among chefs and adventurous home cooks. Packaging is carefully designed for chilled delivery. They combine scale, convenience, and expert curation all in one place.
Distinctive Focus
A huge variety of flash-frozen, specialty and exotic seafood.
Customer Type
Great for adventurous cooks and nationwide home delivery buyers.
Pricing: Mid to high; varies by rarity and cut.
- Website: https://www.thefishsociety.co.uk
- Phone: 01252 521823
- Address: Unit 13, Henley Business Park, GU3 2DX
- Email: customerservice@thefishsociety.co.uk
Review: ★★★★☆
“The range is insane I order rare cuts and everything arrives perfectly chilled.”
7. JFC Fish – “Japanese Seafood Excellence in London”
JFC UK is one of the leading suppliers of premium Japanese seafood and frozen delicacies in London. Serving both restaurants and discerning home chefs, they import a wide range of sashimi-grade fish, frozen shellfish, and rare seafood products directly from Japan and other parts of Asia.
Their product line includes tuna loins, eel, octopus, and yellowtail all handled with strict temperature and quality control. JFC is a key supplier for Japanese and Asian restaurants across the UK. Their London branch offers efficient delivery and tailored customer service. While not a traditional fishmonger, their selection is prized by sushi chefs and premium seafood lovers alike.
Unique Offering
Importer of sashimi-grade seafood and rare Japanese frozen fish.
Best Partner
Ideal for restaurants or chefs specialising in Japanese cuisine.
Pricing: Mid to premium depending on import and product rarity.
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Website: https://www.jfc.eu
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Phone: 020 8963 7700
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Address: 14 Garrick Industrial Centre, Irving Way, London NW9 6AQ
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Email: info@jfc.eu
Review: ★★★★☆
“High-quality tuna and sashimi-grade seafood perfect for authentic Japanese menus.”
8. Southbank Fresh Fish – “Freshness at the Heart of London”
Southbank Fresh Fish is a trusted supplier for many of central London’s restaurants, known for reliability, early deliveries, and daily fresh stock. Operating from a central location, they have built a strong client base through consistency and direct relationships. They source daily from UK markets and work closely with chefs to meet specific menu needs.
While they don’t have an online storefront, they are highly regarded among chefs for their no-fuss, quality-first approach. Their ability to turn around custom orders overnight is one of their biggest assets. Southbank remains a behind-the-scenes force in London’s seafood ecosystem.
Daily Strength
Trusted for same-day delivery and early-morning fresh catch.
Best Use
Favoured by central London kitchens with fast turnaround needs.
Pricing: Business-specific, varies by volume and item.
- Phone: 020 7639 6000
- Address: 16 Upper Ground, London SE1 9PD
- Email: info@southbankfreshfish.co.uk
Review: ★★★★☆
“We rely on them every morning they never let us down and always get the freshest picks.”
9. Fin & Flounder – “East London’s Boutique Fishmonger”
Fin & Flounder is a standout fishmonger located in the popular Broadway Market in Hackney. The shop is known for its beautifully presented display and carefully curated selection of fresh and seasonal seafood. They work with small fisheries and emphasise traceability, often highlighting the origin of each catch.
The fish is expertly filleted, and their shellfish selection includes scallops, langoustines, and native prawns. Their staff are knowledgeable and approachable, offering tips for cooking and preparation. Popular with both foodies and chefs, Fin & Flounder combines modern branding with traditional fishmonger values. It’s a hidden gem in East London.
Standout Offer
High-end fillets, local shellfish, and creative seafood options.
Best Audience
Tailored for foodies and home chefs seeking something special.
Pricing: Mid to premium; varies by season and cut.
- Website: https://finandflounder.co.uk
- Phone: 020 7241 1214
- Address: 71 Broadway Market, London E8 4PH
- Email: info@finandflounder.co.uk
Review: ★★★★★
“The display alone pulls you in the quality and knowledge behind the counter are top-tier.”
10. Regal Fish Supplies – “Trusted By Households Nationwide”
Regal Fish Supplies is a long-established name in seafood home delivery, with a national footprint that includes London. Based in Grimsby, they offer chilled, pre-prepared seafood with next-day delivery options. Customers can order online from an extensive catalogue, choosing from fillets, shellfish, and special seafood boxes.
Their site is built with simplicity in mind, making it easy for households to place orders. With a strong emphasis on hygiene and traceability, Regal Fish is perfect for families who want restaurant-quality fish without leaving home. They’ve built a loyal following with their consistent quality and dependable delivery.
Primary Offer
Filleted fish, mixed seafood boxes, and home delivery service.
Best Match
Great for busy families who want reliable seafood without hassle.
Pricing: Affordable with excellent value bundles.
- Website: https://www.regalfish.co.uk
- Phone: 01652 662100
- Address: Ardent Road, Barton-upon-Humber DN18 5FA
- Email: info@regalfish.co.uk
Review: ★★★★☆
“Delivery was fast, fish was fresh, and portioned just right perfect for weekly cooking.”
How Do These Seafood Companies Ensure Freshness and Quality?
Freshness is the foundation of any seafood business. London’s leading companies have mastered logistics to keep their products in peak condition. From boat to table, the seafood is handled with precision. Cold-chain transportation is essential this means that once the fish is caught, it’s kept at optimal low temperatures during storage and transport until it reaches the customer.
Companies like The Fish Society and Regal Fish Supplies use vacuum-sealed, insulated packaging to preserve quality during shipping. Others, such as James Knight of Mayfair, ensure same-day delivery for select clients, particularly restaurants requiring just-in-time supplies.
On top of this, rigorous quality control procedures are in place at every stage, from processing to packaging. For many of these companies, freshness isn’t just a promise. it’s a logistical and operational priority.
Why Is Sustainable Sourcing Important in the Seafood Industry?
Sustainability is no longer a niche concept in the seafood industry it’s a necessity. With oceans under increasing pressure from overfishing, pollution, and habitat destruction, responsible sourcing is critical.
Top seafood companies in London have embraced sustainability as a core value. This means working with fisheries that follow quotas, protect endangered species, and avoid destructive fishing methods. Certifications like MSC and ASC serve as benchmarks for these efforts, ensuring customers receive seafood that meets environmental and ethical standards.
Moxon’s Fishmongers, for example, prioritises seasonal catches and works closely with British fisheries that adopt responsible practices. Wright Brothers promote awareness around sustainable shellfish harvesting and actively support marine conservation.
Choosing a sustainable seafood supplier doesn’t just impact the environment. it also ensures better product traceability and often better flavour, as the seafood is harvested under optimal conditions.
What Services Do These Seafood Suppliers Offer in London?
Beyond just selling fish, London’s top seafood companies offer an array of tailored services that cater to a broad customer base.
For restaurants and hospitality venues, wholesale supply remains a core service. Many companies offer daily deliveries, custom cuts, and specialty seafood not found in standard retail shops. James Knight of Mayfair and Chamberlain & Thelwell are particularly known for their work with high-end dining establishments.
Retail services, either through physical fishmongers or online platforms, have also become more prominent. The Fish Society and Ish Fish have developed advanced eCommerce platforms, allowing customers to browse and order fresh or frozen seafood with just a few clicks.
Additionally, services like seafood subscription boxes, pre-prepared seafood platters, and chef-curated selections are gaining popularity among home cooks and busy professionals.
How Do Seafood Companies in London Handle Online Orders and Deliveries?
Online seafood retail has undergone a massive transformation in recent years. Where once it was considered difficult to buy fresh fish online, companies like The Fish Society and Regal Fish Supplies have made it not only possible but incredibly convenient.
Customers can now place orders via websites that showcase real-time availability, recipes, and cooking guides. Delivery logistics are tightly managed. Fish is packed in temperature-controlled boxes with biodegradable insulation and ice packs to ensure that it arrives as fresh as when it left the warehouse.
Delivery coverage across London and the wider UK is also expanding, with some companies offering next-day services or even same-day delivery in central areas. This makes high-quality seafood accessible even without a local fishmonger nearby.
What Should You Look for When Choosing a Seafood Supplier?
When selecting a seafood supplier in London, freshness and sustainability should top the list. Look for businesses that provide transparent sourcing information and guarantee their product quality.
Reviews and recommendations matter too. Companies with consistently high ratings on platforms like Google and Trustpilot are often more reliable. It’s also wise to assess the variety of seafood available top suppliers offer a mix of staples like cod and salmon, along with seasonal and exotic options.
Additional considerations include delivery flexibility, customer service, and whether the company holds relevant sustainability certifications. With so many options in London, taking the time to assess these factors ensures you receive excellent value and quality.
How Do These Companies Compare in Terms of Customer Satisfaction?
Customer satisfaction often comes down to three key factors: product quality, service reliability, and ease of ordering. London’s leading seafood companies consistently score high in these areas.
The Chelsea Fishmonger and Moxon’s are frequently praised for their knowledgeable staff and exceptional product handling. James Knight of Mayfair is trusted for their consistency and attention to detail, especially by chefs and restaurateurs. On the digital front, The Fish Society is well-reviewed for their user-friendly website and extensive product range, while Ish Fish earns high marks for fast delivery and eco-conscious packaging.
Ultimately, most of these companies have built their reputations on trust something they maintain through transparency, high standards, and strong customer relationships.
What Are the Latest Trends in London’s Seafood Market?
London’s seafood industry is rapidly evolving, with trends shaped by technology, environmental consciousness, and global tastes. There’s a noticeable increase in demand for traceable seafood customers want to know exactly where their food comes from and how it was caught.
The shift toward eco-friendly packaging is another significant trend. More companies are swapping plastic for biodegradable insulation, recyclable ice packs, and minimal packaging.
Seafood meal kits are gaining traction too, allowing consumers to cook restaurant-style dishes at home. Premium imports such as Japanese toro or Mediterranean octopus are also finding their way into London homes, thanks to advanced freezing and shipping methods.
These trends are expected to continue, as seafood lovers demand more from both product and provider.
What’s the Future of Seafood Companies in London?
As London embraces more sustainable and tech-savvy food systems, the future of seafood companies looks dynamic. Innovations like blockchain technology could soon allow customers to trace a fish from sea to plate. Artificial intelligence and predictive analytics are helping suppliers manage inventory and reduce waste.
Sustainable aquaculture is expected to grow, providing consistent, eco-friendly alternatives to wild-caught fish. Urban fish farms and local sourcing initiatives may reduce dependency on imports, while increasing resilience against global supply chain disruptions.
The companies leading this change will be those who combine tradition with innovation preserving the soul of seafood while preparing for the future.
Conclusion
London is home to a vibrant community of seafood companies that blend heritage, innovation, and responsibility. From classic fishmongers to modern online retailers, these businesses are shaping the way Londoners consume seafood.
Whether you value freshness, sustainability, convenience, or all three, the ten companies highlighted above represent the best the city has to offer. With trusted sourcing, excellent service, and forward-thinking approaches, they set the standard for seafood in the UK’s culinary capital.
FAQs About Seafood Companies in London
How can I check the freshness of seafood when buying online?
Most online suppliers use vacuum packaging and chilled delivery systems. Check for harvest dates and customer reviews for added confidence.
Are London seafood companies sourcing locally?
Yes, many source from UK fisheries in Cornwall, Scotland, and the South Coast, reducing travel time and supporting local economies.
Do seafood suppliers in London cater to restaurants and businesses?
Absolutely. Several suppliers focus exclusively on the B2B market, with tailored offerings for chefs and restaurants.
What certifications should I look for in a seafood supplier?
Look for MSC or ASC certification, which ensures responsible and sustainable seafood sourcing.
Is it cheaper to buy seafood wholesale in London?
Generally, yes. Wholesale options often offer better pricing per kilo, especially for bulk or regular orders.
Do these seafood companies offer next-day delivery?
Yes, companies like Regal Fish Supplies and The Fish Society offer fast delivery options across London and the UK.
How do I know if a seafood company uses sustainable practices?
Reputable suppliers will list certifications and sourcing methods on their website. Look for transparency and third-party endorsements.