Market map · United Kingdom
Ocean tech market map: United Kingdom
55 ocean tech startups based in the United Kingdom that have raised money in rounds we track, placed in 6 segments by what each says it does. Together they have raised $830M; the biggest segment is shipping and ports.
55startups on the map
6segments
$830Mraised between them
Ocean energymost funded segment
Funding by segment
- Shipping and ports$175M23
- Ocean data and robotics$224M10
- Seaweed and algae$142M9
- Ocean energy$273M6
- Aquaculture and fisheries$9.5M4
- Ocean carbon and restoration$5.2M3
Where they are based
- United Kingdom55$830M
United KingdomFounded
7Earlier
212
313
314
215
16
617
418
219
920
521
422
223
124
125
26
4 without a founding year on record.
Total raised
- Under $1M16
- $1M to $10M21
- $10M to $50M14
- $50M to $250M4
- $250M to $1B0
- $1B and over0
Each dot is a startup: the year it was founded across, the total it has raised up (each line is ten times the one below). Pick a segment to pick it out.
50 of 55 startups shown; the rest have no founding year or amount on record.
- 1 to 2
- 3 to 7
- 8 to 24
- 25 to 99
- 100 and more
- United Kingdom55
Startups by country, 1 country in all.
Segment by segment
Shipping and ports
23 startups · $175M raised
Boats.comboats.com is the leading online marketplace for buying or selling a boat.United Kingdom$32M
Ambassador Cruise LineAmbassador Cruise Line's purpose is to inspire and delight every guest to enjoy an authentic cruise experience effortlessly, & sustainably.United Kingdom$23M
RAD PropulsionRAD Propulsion is a marine technology company based in Sarisbury Green, Hampshire, UK, founded in 2018 by engineers Rich Daltry and Dan Hook.United Kingdom$23M
ArksenArksen is a UK-based marine adventure company founded in 2017 by Jasper Smith.United Kingdom$16M
ACUA OceanWe design, develop and deploy hydrogen- powered uncrewed surface vessels (H-USVs)United Kingdom$15M
MLA CollegeMLA College is an education center that specializes in distance learning courses for the marine and maritime sectors.United Kingdom$13M
ZelimZelim is a global maritime technology company based in Edinburgh, UK, focused on enhancing search and rescue (SAR) operations at sUnited Kingdom$11M
SignolSignol is a London-based company specializing in workforce nudge technology and behavioral science.United Kingdom$9.3M
Ocean data and robotics
10 startups · $224M raised
EnshoreEnshore is a UK based subsea trenching company, providing seabed intervention services to mega-projects across industry around the world.United Kingdom$138M
XLCCXLCC will establish a new, export-led, green industry in the Uk: world class HVDC subsea cable manufacturing.United Kingdom$27M
VaarstVaarst develops robotic analytic solutions for marine applications.United Kingdom$20M
Magma GlobalMagma Global designs and manufactures m-pipe, a high performance solution for risers and jumpers in subsea oil and gas transfers.United Kingdom$14M
HCS Control SystemsHCS Control Systems is an engineering company that designs and manufactures subsea equipment for the oil and gas sector.United Kingdom$13M
Spex GroupSPEX Group is an oil and gas technology company based in Aberdeen, UK, founded in 2009.United Kingdom$7.6M
Orca HubORCA Hub is a multi-university research program and consortium established in 2017, focusing on Robotics, Artificial Intelligence United Kingdom$3.5M
ScrubMarineScrubMarine develops robotic systems for hull cleaning, inspection, and offshore maintenance using cavitation technology.United Kingdom$994K
Seaweed and algae
9 startups · $142M raised
NotplaNotpla is a London-based sustainable packaging startup founded in 2014 by Rodrigo García González and Pierre Paslier.United Kingdom$89M
OCEANIUMOceanium develops innovative, all-natural food and nutraceutical products and sustainable materials from sustainably-sourced seaweed.United Kingdom$19M
Samudra OceansSamudra Oceans is a London-based climate technology startup founded in 2022, focused on advancing ocean farming and blue carbon capture.United Kingdom$14M
Brilliant PlanetBrilliant Planet is a climate technology company based in London, founded in 2013.United Kingdom$12M
KelpiKelpi is a UK-based sustainable materials innovation company founded in 2020.United Kingdom$5.5M
AlgapelagoAlgapelago is a regenerative ocean farming company founded in 2021, focused on creating sustainable seaweed forests.United Kingdom$807K
BioMaraBioMara is a Scottish biotechnology company founded in 2022, based in Edinburgh.United Kingdom$653K
Seaweed GenerationSeaweed Generation is a developer of robotic technologies to harness the power of seaweed cultivation systems to counteract climate change.United Kingdom$365K
Ocean energy
6 startups · $273M raised
Pentland Floating Offshore Wind FarmPentland Floating Offshore Wind Farm energy infrastructure, including offshore wind, onshore wind, solar photovoltaic (PV).United Kingdom$196M
Corio GenerationCorio Generation is a London-based offshore wind developer, established in 2022 and part of the Macquarie Group.United Kingdom$70M
Caudal EnergyCaudal Energy is a UK-based renewable energy startup and an Oxford University spinout, founded in 2024.United Kingdom$5.8M
NeuWave TechnologiesNeuWave Technologies is a Manchester-based company that specializes in AI-driven environmental intelligence for offshore and maritUnited Kingdom$1.0M
XmoorXmoor specializes in machine learning-powered tools for rapid dynamic analysis of floating offshore structures.United Kingdom$533K
First Marine SolutionsFirst Marine Solutions (FMS) is an international energy service and equipment company based in Aberdeen, Scotland.United Kingdom$434K
Aquaculture and fisheries
4 startups · $9.5M raised
WellFish TechWellFish Tech is a biotechnology and aquaculture-diagnostics company based in Paisley, Scotland.United Kingdom$6.8M
WellFish DiagnosticsWellFish Diagnostics is on a mission to enhance the sustainability of the aquaculture industry.United Kingdom$1.6M
PlantSeaPlantSea manufactures and develops sustainable products using seaweed and aquaculture materials.United Kingdom$709K
AquanzoAquanzo is a marine protein farming company that challenges the exploitation of the ocean to produce marine ingredients for the aqUnited Kingdom$361K
Ocean carbon and restoration
3 startups · $5.2M raised
WaterhaulWaterhaul is a social enterprise based in Cornwall, United Kingdom, founded in 2018 by marine scientist Harry Dennis.United Kingdom$1.9M
FlexSeaFlexSea develops novel biomaterials derived from renewable marine resources to replace current primary plastic packaging.United Kingdom$1.8M
OceanSaverOceanSaver is a UK-based eco-friendly cleaning brand founded in 2018 by John Buitekant.United Kingdom$1.5M
How this map is made. Every startup here has raised money in rounds we track, and is based in United Kingdom. It joins the map when its sectors, read from its rounds, or the opening of its own description say it works in ocean tech, and goes to the first segment whose words it carries. Each segment shows its best-funded first. Rebuilt nightly; updated 15 November 2026.
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