Company lists · Data refreshed September 2026

Top 25 Seaweed packaging companies based in the United Kingdom

Name: Seaweed packaging companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 86 companies tracked

RevenueBase identified 86 seaweed packaging companies headquartered in the United Kingdom as of September 2026 and tracks 702 professional contacts across them, including 319 with verified work emails. London is the largest hub.

This list covers seaweed packaging companies headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

86Companies

702Contacts tracked

319Verified emails

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The 25 largest seaweed packaging companies based in the United Kingdom

Ranked by team size

Top 25 of 86 seaweed packaging companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to seaweed packaging companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Notpla	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	91 contacts →
	Partial evidence “We are a sustainable packaging start-up.” Source: RevenueBase Database · checked Sep 17, 2026
2	Vegware	Partial evidence	Edinburgh, United KingdomHQ checked Sep 17, 2026	51-200	59 contacts →
	Partial evidence “Vegware is the global specialist in plant-based compostable foodservice packaging.” Source: RevenueBase Database · checked Sep 17, 2026
3	Xampla	Indirect evidence	Cambridge, United KingdomHQ checked Sep 17, 2026	11-50	46 contacts →
	Indirect evidence “Xampla is creator of natural materials for commercial applications.” Source: RevenueBase Database · checked Sep 17, 2026
4	Pulpex	Partial evidence	Sawston, United KingdomHQ checked Sep 17, 2026	51-200	43 contacts →
	Partial evidence “PULPEX is a world-class, sustainable packaging technology company with the single-minded mission to use material science innovation to enable and deliver much-needed and highly…” Source: RevenueBase Database · checked Sep 17, 2026
5	Aquapak Polymers LTD	Partial evidence	Rubery, United KingdomHQ checked Sep 17, 2026	11-50	40 contacts →
	Partial evidence “We are pioneers in the development of innovative planet-friendly materials that enable the production of sustainable packaging and the elimination of harmful plastic pollution.” Source: RevenueBase Database · checked Sep 17, 2026
6	Polythene UK LTD	Partial evidence	Witney, United KingdomHQ checked Sep 17, 2026	11-50	33 contacts →
	Partial evidence “The UK's largest independent supplier of polythene packaging, Polythene UK is the award-winning polythene supplier for your packaging requirements.” Source: RevenueBase Database · checked Sep 17, 2026
7	KELPI	Strong evidence	Bristol, United KingdomHQ checked Sep 17, 2026	11-50	25 contacts →
	Strong evidence “Kelpi is a world-leading sustainable materials innovation business - harnessing the properties of seaweed to create compostable, marine-safe, low-carbon bioplastic packaging.” Source: RevenueBase Database · checked Sep 17, 2026
8	Amipak LTD	Partial evidence	Croydon, United KingdomHQ checked Sep 17, 2026	51-200	22 contacts →
	Partial evidence “amipak ltd is a packaging and containers company based out of 16-18 Factory Ln, Croydon, United Kingdom.” Source: RevenueBase Database · checked Sep 17, 2026
9	Tri-Pack Packaging Systems LTD	Indirect evidence	Grimsby, United KingdomHQ checked Sep 17, 2026	11-50	17 contacts →
	Indirect evidence “With over 40 years’ experience, Tri-pack are experts in the design and manufacture of sustainable boxes for a wide range of industries; from seafood to fresh herbs, pharmaceutical…” Source: RevenueBase Database · checked Sep 17, 2026
10	Flexi-Hex	Partial evidence	Porthleven, United KingdomHQ checked Sep 17, 2026	1-10	16 contacts →
	Partial evidence “Eco-friendly, protective packaging solutions for a range of market sectors including boardsports, drinks, cosmetics, electronics, homeware and commercial.” Source: RevenueBase Database · checked Sep 17, 2026
11	Packaging Environmental	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	16 contacts →
	Partial evidence “Packaging Environmental Limited is a leading supplier of sustainable and eco-friendly food & drink packaging with a focus on products made from renewable materials.” Source: RevenueBase Database · checked Sep 17, 2026
12	Puffin Packaging	Partial evidence	Leeds, United KingdomHQ checked Sep 17, 2026	1-10	14 contacts →
	Partial evidence “A pure play planet friendly packaging company that customers trust with the environment.” Source: RevenueBase Database · checked Sep 17, 2026
13	Plantsea	Partial evidence	St Asaph, United KingdomHQ checked Sep 17, 2026	11-50	13 contacts →
	Partial evidence “Making laundry capsules plastic-free by replacing PVOH films with seaweed.” Source: RevenueBase Database · checked Sep 17, 2026
14	Seagrown	Indirect evidence	Scarborough, United KingdomHQ checked Sep 17, 2026	11-50	11 contacts →
	Indirect evidence “SeaGrown was born from a love of the sea.” Source: RevenueBase Database · checked Sep 17, 2026
15	Greenlight Packaging	Partial evidence	Cardiff, United KingdomHQ checked Sep 17, 2026	11-50	11 contacts →
	Partial evidence “Established in 1994, Greenlight is an award-winning international packaging manufacturer with a proud history of making a greener future.” Source: RevenueBase Database · checked Sep 17, 2026
16	PB Packaging Group LTD	Partial evidence	Greenford, United KingdomHQ checked Sep 17, 2026	51-200	10 contacts →
	Partial evidence “Polybags, founded by Geoff Davies in 1961, has since grown into the successful PB Group, one of the leading packaging companies in the UK.” Source: RevenueBase Database · checked Sep 17, 2026
17	pouches.co.uk	Partial evidence	Wednesfield, United KingdomHQ checked Sep 17, 2026	51-200	8 contacts →
	Partial evidence “We are a UK flexible packaging manufacturer focusing on delivering top-notch packaging solutions, whilst lowering the environmental impact WE ARE PARTNERS NOT JUST SUPPLIERS We…” Source: RevenueBase Database · checked Sep 17, 2026
18	Cirrus Plastics Limited	Indirect evidence	Carn Industrial Estate, United KingdomHQ checked Sep 17, 2026	1-10	7 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
19	Algapelago	Partial evidence	Appledore, United KingdomHQ checked Sep 17, 2026	1-10	6 contacts →
	Partial evidence “Algapelago is a farming-led seaweed business on a mission to develop a network of seaweed farms (‘alga-pelagos’), to unlock the potential of kelp as a climate-positive, high value…” Source: RevenueBase Database · checked Sep 17, 2026
20	Flexsea	Strong evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	6 contacts →
	Strong evidence “FlexSea is a sustainable-packaging company aiming to replace traditional petroleum plastic with an innovative natural material derived from seaweed.” Source: RevenueBase Database · checked Sep 17, 2026
21	Searo Labs	Partial evidence	Cambridge, United KingdomHQ checked Sep 17, 2026	11-50	5 contacts →
	Partial evidence “Leading the industry with seaweed-powered smart materials.” Source: RevenueBase Database · checked Sep 17, 2026
22	Bioviron International Limited	Indirect evidence	Royal Wootton Bassett, United KingdomHQ checked Sep 17, 2026	1-10	4 contacts →
	Indirect evidence “BioViron™ is at the forefront in delivering a "one stop" solution for companies and public sector organisations environmentally friendly products from annually renewable…” Source: RevenueBase Database · checked Sep 17, 2026
23	Aquaculture	Partial evidence	Newquay, United KingdomHQ checked Sep 17, 2026	1-10	4 contacts →
	Partial evidence “Welcome to Aqua Culture, where the power of handpicked waste seaweed from the Cornish coast meets the beauty of plant care!” Source: RevenueBase Database · checked Sep 17, 2026
24	Marinatex	Partial evidence	Brighton, United KingdomHQ checked Sep 17, 2026	1-10	3 contacts →
	Partial evidence “MarinaTex develops novel materials and coatings designed as planet-conscious alternatives to problematic plastics across packaging and agriculture that are made from naturally…” Source: RevenueBase Database · checked Sep 17, 2026
25	Symbiotex	Indirect evidence	Wolverhampton, United KingdomHQ checked Sep 17, 2026	1-10	3 contacts →
	Indirect evidence “SymbioTex’s vision is to disrupt this harmful cycle by displacing as much landfilled single use rigid plastic as we can.” Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: seaweed packaging companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names seaweed packaging companies.
Partial evidence: Its own public description names part of seaweed packaging companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name seaweed packaging companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 86 seaweed packaging companies based in the United Kingdom

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Seaweed packaging companies based in the United Kingdom at a glance

As of Sep 17, 2026

45.4%Verified-email coverage

8.2Average contacts per company

1-10Median size (employees)

20.9%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 86 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among seaweed packaging companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United Kingdom whose own description of what they do matches “seaweed packaging companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names seaweed packaging companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among seaweed packaging companies, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 319 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 17, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names seaweed packaging companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many seaweed packaging companies are there based in the United Kingdom?

RevenueBase identified 86 seaweed packaging companies headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Notpla, headquartered in London, tops this list with the largest team on record.

Which city has the most seaweed packaging companies?

London leads with 18 headquartered companies, followed by Cambridge (3) and Edinburgh (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 319 verified decision-maker contacts tracked across these 86 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.