Best Sustainability Tech Companies in Wales, United Kingdom
The 45 best Sustainability Tech companies in Wales, United Kingdom in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: D2 PropCo.
Our analysis of 59 Sustainability Tech companies
$4.5b in tracked funding; 81% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Sustainability Tech companies in Wales
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | D2 PropCo Provider of temporary housing for vulnerable adults and young people 55Funding top 35%Talent bottom 49%Global bottom 36% All 3 signals ▾Fundingtop 35% Talentbottom 49% Globalbottom 36% Funding: Raised $37.7M across 1 rounds · 1 rounds over 1 yrs (1.0/yr) Talent: 1 named leader on record · 1 C-suite/founder profile curated rank vs industry peers · Fliar Intelligence Index 55/100 | $38M | 4 mo ago | Funding Raised | Duncan Evans Chief Executive Officer | 2017 | — | — | 1 partnership |
| 2 | Fiberight Provider of waste collection services | $28M | 175 mo ago | Deadpooled | Craig Paul Co-Founder & CEO | 2009 | — | 27 patents Biomass waste conversion and hydrolysis technologies for lignocellulosic feedstock processing. | — |
| 3 | Sure Chill Develops a refrigeration system for use with intermittent power | $12M | 89 mo ago | Series A | Peter Saunders Co-Founder | 2002 | — | 84 patents Portable refrigeration and cooling apparatus for mobile and transport applications | — |
| 4 | MyHealthChecked Provider of an online platform to order diagnostic test kits sample collection swab for Covid-19 detection | $8M | 88 mo ago | Public | Penny Mccormick CEO | 2008 | SanitySentryZendesk+23 | — | — |
| 5 | Momentum Bioscience Developer of diagnostic solutions for the detection of infectious diseases | $6M | 59 mo ago | Series A | — | 2008 | — | 67 patents Rapid microbial detection, enumeration, and capture technologies for diagnostics and food safety | — |
| 6 | Bloemteknik Provider of precision LED lighting solutions and autonomous control systems 24Product top 47%Talent bottom 49%Global bottom 45%Funding bottom 44% All 4 signals ▾Producttop 47% Talentbottom 49% Globalbottom 45% Fundingbottom 44% Product: 2 published apps (30 installs) · Company stage: Series A Talent: 1 named leader on record · 1 C-suite/founder profile curated rank vs industry peers · Fliar Intelligence Index 24/100 | $3M | 7 mo ago | Series A | James Fleet Co-Founder & CEO | 2023 | — | — | — |
| 7 | Deer Technology Provider of meter reading solutions for commercial applications | $2M | 63 mo ago | Seed | Garry Jackson Co-Founder | 2014 | — | — | 2 launchs |
| 8 | monva Comparison platform for credit cards | $1M | 64 mo ago | Deadpooled | — | 2018 | — | — | — |
| 9 | Seren Photonics Manufacturer of substrate | $704K | 100 mo ago | Seed | Godfrey Ainsworth Chairman & CEO | 2009 | — | 50 patents Enabling semi‑polar crystal substrates for high‑efficiency LED and photonic device fabrication. | — |
| 10 | Renbee Platform connecting homeowners with installers for home decarbonisation projects | $411K | 24 mo ago | Seed | Andrei Co-Founder | 2023 | — | — | — |
| 11 | Trecento Diagnostics Developer of molecular assay based testing products for human and companion animal diagnostics | $387K | 78 mo ago | Seed | Mark Pinder CEO | 2014 | — | 6 patents Collecting agricultural samples for plant health and soil nutrient analysis | — |
Top 12 Sustainability Tech companies in Wales
#1
Funding Raised · Cardiff, Wales · founded 2017$37.7Mraised▾
Provider of temporary housing for vulnerable adults and young people. This organization manages residential properties to offer interim accommodation for individuals requiring immediate shelter. Staff members oversee the maintenance and management of these facilities to ensure the availability of living spaces for those in need of housing.
- Apr 2026Conventional Debt$37.7M
#2
Series A · Cardiff, Wales · founded 2023$3.4Mraised▾
Provider of precision LED lighting solutions and autonomous control systems. It specializes in creating customized LED lighting systems tailored for various horticultural applications, including vertical farms and greenhouses. Their offer include modular and adaptable lighting systems designed to optimize plant growth and productivity.
- Jan 2026Series A$3.4M
#3
Deadpooled · Abergavenny, Wales · founded 2009 · 15 employees$27.9Mraised▾
Provider of waste collection services
- Jan 2012Conventional Debt$25M
- Sep 2010Grant (prize money)$2.9M
- Angel—
#4
Series A · Cardiff, Wales · founded 2002 · 26 employees$12.2Mraised▾
Develops a refrigeration system for use with intermittent power. The Sure Chill refrigeration system works by using a compartment surrounded by a cladding of water. Electric power is used to freeze the water. When power is not available, the ice melts and starts to rise. The system can be connected to renewable energy sources such as solar for off-grid applications, or the grid.
- Feb 2019Series A$9.2M
- Feb 2018Series A$7.1M
- Aug 2015Grant (prize money)$1.5M
- Nov 2012Seed$695K
#5
Seed · Monmouthshire, Wales · founded 2023$411.5Kraised▾
Platform connecting homeowners with installers for home decarbonisation projects. It streamlines the process of finding and managing installers for homeowners seeking to implement renewable energy solutions. The platform facilitates quoting, planning, and regulatory compliance, ensuring homeowners are connected with installers who deliver quality work. It also provides installers with access to a consistent stream of homeowners and resources for training and compliance.
- Jul 2024Seed$411.5K
#6
Series A · Cardiff, Wales · founded 2008 · 13 employees$5.8Mraised▾
Developer of diagnostic solutions for the detection of infectious diseases. Its proprietary platform Enzymatic Template Generation & Amplification (ETGA) detects microbial infections by measuring nucleic acid modifying enzymes. The company's flagship product is Cognition is based on ETGA technology.
- Sep 2021Series A$5.4M
- Sep 2011Seed$355K
#7
Public · Cardiff, Wales · founded 2008 · 21 employees$8Mraised▾
Provider of an online platform to order diagnostic test kits sample collection swab for Covid-19 detection. It allows users to buy a test kit pack with a nasal swab, tube, biohazard bag, and absorbent pad having the instructions for use. The users can collect their swab sample and can send it back to the nearest lab for testing. Users can also track results by using the tracking number provided by the care team.
- Apr 2019Post IPO$3M
- Aug 2018Post IPO$2.3M
- Nov 2017Post IPO$2.6M
#8
Seed · Port Talbot, Wales · founded 2014 · 11 employees$1.8Mraised▾
Provider of meter reading solutions for commercial applications. The product offerings include LimpetReader - it is a device that takes pictures of the meter and converts the image to a data value, AutoReader - which automatically takes readings and sends the data to a secure database, and Handreader - a meter reading solution that is accessed securely online.
- May 2021Seed$1.8M
#9
Deadpooled · Deeside, Wales · founded 2018 · 2 employees$1.2Mraised▾
Monva offers a credit card comparison platform for consumers. It provides virtual assistance to consumers for making choices about credit cards. It enables to manage quotes, offers, switching of cards, and renewals through the central account. It offers a comparison of credit cards for money transfers, purchases, and more.
- Mar 2021Seed$616.5K
- Apr 2020Seed$541.4K
#10
Seed · Bridgend, Wales · founded 2009 · 3 employees$704.3Kraised▾
Seren Photonics manufactures substrates. Its products include polar, semi-polar and non-polar Gallium Nitride (GaN) templates and components for LED's, lasers, VCSELs and power switches. Has patented the technology which can significantly increase efficiencies of LEDs at high power levels. Also, the templates are used for manufacturing high-efficiency MicroLEDs for display technologies. The company has partnered with BluGlass.
- Apr 2018Seed$704.3K
- Feb 2018Seed—
#11
Seed · Cardiff, Wales · founded 2014 · 3 employees$386.9Kraised▾
Developer of molecular assay based testing products for human and companion animal diagnostics. The company develops products to detect and monitor infection, infectious diseases and autoimmune disorders, a specific conditions being Lyme disease, a bacterial infection spread to humans and animal by infected ticks. The company uses urine instead of blood for routine testing while conducting DNA extraction for their tests.
- Jan 2020Seed$260.4K
- Jul 2019Seed$126.5K
#12
Funding Raised · Cardiff, Wales · founded 1974 · 110 employees—raised▾
Developer of affordable houses
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Sustainability Tech coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Climate Adaptation is moving in the United Kingdom
A read on the academic research around Climate Adaptation — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 1,243 United Kingdom-affiliated papers.
- University of Oxford96
- University of Leeds63
- London School of Economics and Political Science57
- University of Exeter54
- University College London46
- Flood myth1→47
- Climate change1→38
- Flooding (psychology)1→22
- Climate risk2→8
- Environmental planning1→6
- Climate change12→105
- Flood myth20→103
- Resilience (materials science)4→45
- Flooding (psychology)10→48
- Climate risk2→29
- Climate change53→312
- Resilience (materials science)17→121
- Psychological resilience16→77
- Vulnerability (computing)20→79
- Climate risk7→61
Where climate adaptation is researched across United Kingdom
Location clusters by institution affiliation — each city's volume, stance tone, and a quick read on its hot topic, what's advancing, the opening opportunity, and the main concern.
Who's filing climate adaptation patents in the United Kingdom
United Kingdom climate adaptation patent filing is steady — 5 filings from 4 assignees (2017–2024), led by Clive Eales Johnson, Eugene J Kellett, Mohammed Rashid Iftkhar; annual filings 1→1.
- Clive Eales Johnson2
- Eugene J Kellett1
- Mohammed Rashid Iftkhar1
- Eales Johnson Clive1
Common questions
Riya reads income statements for fun. She covers the real money in a sector — revenue, growth, who actually earns — and never met a vague claim she didn't want a number for.