Best Eco Web Hosting in the UK (2026) – Top 9 Green Hosts Compared
Four of the six hosts on the last version of this list publish no evidence in the Green Web Foundation's directory. That nonprofit checks a host's renewable-energy paperwork before listing it. HostPapa quietly dropped green energy from its UK homepage in late 2024. And 123-reg's only environmental claim is "low-energy systems". So we rebuilt the list around proof: who publishes a certificate, where your server sits, and what the plan costs after year one.
Quick answer: Krystal is the best eco host for most UK sites. It costs a flat USD 9.34/mo (GBP 7) and runs from Netwise's East London data centre on power matched 100% with renewables. You also get 60 days to change your mind. Kualo matches that evidence and hosts registered UK charities for free. Mythic Beasts is the cheapest verified-green UK option at a flat USD 3.34/mo (GBP 2.50).
Jump to: GreenGeeks | Eco Web Hosting | Kualo | 123-reg | HostPapa | SiteCountry | Krystal | 20i | Mythic Beasts | How to Choose | FAQ
Last reviewed: September 2026. Prices and features verified.
What changed since the last update? Eco Web Hosting cut its refund window and raised its prices in 2026. HostPapa no longer makes any green claim on its UK site. GreenGeeks' Lite plan is capped at 25 GB, not the unlimited space our old table showed. We kept all six original hosts, labelled the weak ones honestly, and added three UK hosts with published evidence: Krystal, 20i and Mythic Beasts.
How We Selected These Providers
Every host here had to face one question first: can anyone outside the company confirm the green claim? On 19 September 2026 we ran all nine through the Green Web Foundation directory and its public checker. Where we could find a server that hosts customer sites, we tested its IP address, not the marketing site.
New additions had to clear three bars. They needed a directory entry with published evidence, a UK data centre for shared hosting, and an entry plan under USD 15/mo (GBP 11.24). We kept the six original hosts because none has shut down, even where the green case is thin.
What the Green Web Check Found
Here's the trap we hit first. A green result for a host's own website can be meaningless. greengeeks.com, hostpapa.co.uk and kualo.co.uk all pass because Cloudflare, which is registered as green, serves those pages. That describes the marketing site's front door, not the machine your website will run on.
So we looked at what each directory entry actually publishes, and tested server IPs where we could:
- GreenGeeks: listed with a 2025 Bonneville Environmental Foundation report and a US EPA confirmation of its 300% match. All four data-centre test IPs pass under GreenGeeks' own name.
- Eco Web Hosting: its parent, Enix Ltd, has an entry but publishes no supporting documents. The IPs behind its website, control panel and status page don't pass.
- Kualo: listed with a certificate covering Netwise, its data-centre operator, from 1 April 2026 to 31 March 2027. It shows Netwise buying REGOs (Renewable Energy Guarantees of Origin) for its whole supply. These are proof of renewable generation, registered with Ofgem, the UK energy regulator. A carbon-credit certificate sits alongside it.
- 123-reg: no entry, and its domain doesn't pass.
- HostPapa: no entry in the UK, Canadian or US directory. Its domains pass only through Cloudflare.
- SiteCountry: no entry, and its domain doesn't pass.
- Krystal: listed, and its sites resolve to Krystal's own registered network. Its entry publishes no documents, but its London servers sit in the building Netwise's certificate covers.
- 20i: listed, but the only published evidence is 20i's own green-hosting page.
- Mythic Beasts: verified since March 2024, with reports from Telehouse, Digital Realty and Equinix, its data-centre operators.
We weighted proof of green power at 35%, a UK server at 25%, three-year cost at 25%, and refund and uptime terms at 15%. Sources were official pricing, terms and data-centre pages, plus the documents each directory entry publishes. We also used Netwise's efficiency figures, the Uptime Institute's 2025 survey, and Internet Archive copies to date policy changes.
The limits are real. We didn't run speed or load tests, and we read certificates rather than audit them. SiteCountry doesn't publish renewal prices, 20i doesn't say whether its prices include VAT, and Mythic Beasts publishes no refund period. Most "renewable" claims here mean annual matching, not hour-by-hour supply. Prices exclude VAT unless noted and use the ECB rate of 18 September 2026 (GBP 1 = USD 1.3344). For hosts with US and Asian servers, see our global green hosting comparison.
GreenGeeks - Best for Certified Renewable Matching Outside the UK
From USD 2.95/mo (GBP 2.21), renews at USD 13.95 | 25 GB SSD | Nearest server: Amsterdam | 30-day refund
GreenGeeks has the strongest paperwork of the international hosts here, and no server in Britain. Its four data centres sit in Chicago, Montreal, Amsterdam and Singapore. A UK visitor's request crosses the North Sea at minimum. For a blog, that hop barely registers; for a UK shop with a busy checkout, choose Amsterdam on purpose, not by accident.
The green case holds up. GreenGeeks pays the Bonneville Environmental Foundation (BEF) to buy RECs (renewable energy certificates) equal to three times its estimated power use. It also plants one tree per new account and cites EPA Green Power Partner status since 2009. Its directory entry carries a 2025 report, and its customer IPs pass the check under its own name.
Year two is the problem. Lite costs USD 2.95/mo for the first 12 months, then USD 13.95/mo, a 4.7x renewal jump. Three years on Lite total USD 370.20 (GBP 277.42). That's about 3.1 times the USD 120.10 (GBP 90) Mythic Beasts charges for Web 25 over the same period. To be fair, you get 25 GB against 5 GB. You also get LiteSpeed caching, from a fast web server with built-in page caching. A free CDN (content delivery network) serves files from locations near each visitor.
Pros
- 300% renewable matching, backed by a 2025 BEF report
- Customer IPs pass the Green Web Check under its own name
- LiteSpeed caching and a free CDN on every plan
- One tree planted per new account
Cons
- No UK data centre; Amsterdam is the nearest
- Lite renews at USD 13.95/mo
- Only 25 GB on the entry plan
Pricing: Lite USD 2.95/mo (GBP 2.21) for 12 months, then USD 13.95 (GBP 10.45); 1 site, 25 GB SSD. Pro USD 4.95 to USD 18.95 (GBP 3.71 to 14.20); unlimited sites, 50 GB. Premium USD 8.95 to USD 30.95 (GBP 6.71 to 23.19); 100 GB. Billed in USD. 30-day refund.
Best for: a site whose visitors are spread across Ireland, the Netherlands and the rest of Western Europe, not just Britain. Skip if: most visitors are British, or you plan to stay on Lite past year one.
Choose GreenGeeks only if certified renewable matching matters more than a UK server. For documented green power on a London server, Krystal costs a flat USD 9.34 and still undercuts Lite's three-year total. If price rules, Mythic Beasts costs about a third as much over three years.
Eco Web Hosting - Best for Monthly Billing on UK Servers
From USD 5.99/mo (GBP 4.49), same at renewal | 10 GB | UK data centres | 30-day refund
Start with two changes this year. Eco Web Hosting cut its money-back guarantee from 45 to 30 days in May 2026. Archived copies of its homepage place the switch between 10 and 13 May. Eco Web Hosting also raised Essential from USD 4.66 to USD 5.99 a month (GBP 3.49 to 4.49) between 9 June and 25 July 2026. That's a 29% price rise, and older reviews still quote the old terms.
The trees are real; the evidence for the power is thinner. Each plan funds monthly tree planting in Nepal, Indonesia and Haiti, from one tree on Essential to four on Ultimate. The company says its data centres run on "100% sustainable energy" but names no facility. Its parent is Enix Ltd, which also runs HostPresto, Brixly and a separate brand called Eco Hosting. Enix has a Green Web Foundation entry, but it publishes no supporting documents.
What you do get is a UK server on a rolling monthly contract with no teaser price. Essential's USD 5.99 buys 10 GB, 25 mailboxes, a web application firewall and SSH access (command-line control of your files). Mythic Beasts' Web 35 gives the same 10 GB for USD 4.67 (GBP 3.50). That's USD 1.32 less, with named data-centre evidence behind it.
Pros
- UK data centres, no promo-then-spike pricing
- SSH, 25 mailboxes and a firewall on the entry plan
- Monthly tree planting tied to your plan
- Free migration, usually within 24 hours
Cons
- Refund window cut to 30 days in May 2026
- Essential up 29% since June 2026
- No published evidence behind the energy claim
Pricing: Essential USD 5.99/mo (GBP 4.49), or USD 60.04 (GBP 44.99) a year with two months free; 1 site, 10 GB, 50 GB bandwidth. Professional USD 9.33 (GBP 6.99); 10 sites, 50 GB per site. Ultimate USD 17.33 (GBP 12.99); unlimited sites. The monthly rate is the ongoing rate. 30-day refund.
Best for: a small UK site owner who wants monthly billing, UK servers and tree planting they can point to. Skip if: you need documented renewable power; Kualo and Krystal both publish it for a few pounds more.
Pick Eco Web Hosting if a monthly, no-commitment UK plan with SSH is the whole brief. If the word "eco" has to survive scrutiny, Kualo's Solo costs USD 3.34 more and comes with a Netwise energy certificate. If price is the brief, Mythic Beasts is cheaper and better documented.
Kualo - Best for UK Charities and Small Businesses
From USD 9.33/mo (GBP 6.99), same at renewal | 10 GB SSD | East London data centre | 60-day refund
If you run a registered UK charity, Kualo will probably host your site for nothing. Its Solo plan is free or half price for eligible charities, and Kualo says it has supported more than 1,000 so far. The conditions are light: move your domain to Kualo and add a small footer link.
The evidence is the best documented on this list. Kualo's directory entry links an energy broker's certificate for Netwise, valid until 31 March 2027. It states that REGOs covering 100% of Netwise's supply were retired into Netwise's own account on the Ofgem register. Kualo says it buys the power from Statkraft, whose sites include the Baillie wind farm in the Scottish Highlands.
Efficiency is the other half. Netwise lists its London East facility at a PUE of 1.10 (power usage effectiveness: total power drawn divided by power reaching the servers). The Uptime Institute's 2025 survey puts the global average at 1.54. So overhead drops from 54p to 10p per pound of server power. One loose end: Kualo's green page still describes a rooftop solar array due "by 2025" as planned.
On price, Solo costs USD 9.33 (GBP 6.99) against Krystal's USD 9.34 (GBP 7) for the same 10 GB. Prepay three years and Kualo drops to USD 6.74 (GBP 5.05) a month.
Pros
- REGO-backed renewable power, certificate valid to March 2027
- Free or half-price hosting for registered UK charities
- 99.9% uptime guarantee with service credits
- 24/7 phone support and 30 daily backups kept
Cons
- Only 10 GB SSD on Solo
- Solo hosts one site; unlimited sites start at USD 14.67
- Solar array promised for 2025 is still "planned"
Pricing: Solo USD 9.33/mo (GBP 6.99); 1 site, 10 GB SSD; or USD 242.52 (GBP 181.74) for three years upfront. Startup USD 14.67 (GBP 10.99); unlimited sites, 30 GB. Performance USD 24.01 (GBP 17.99); 50 GB, Redis and Memcached. No introductory discount. 60-day refund.
Best for: registered UK charities, and small businesses that want a certificate they can show a client. Skip if: 10 GB is too tight and energy isn't your filter; HostPapa gives 25 GB for USD 2.60.
Kualo is the pick when the green claim has to hold up in a supplier review or grant report, and for any registered charity. Need more than 10 GB for about USD 9? Mythic Beasts' Web 70 gives 25 GB. Against Krystal, you're choosing between two hosts in one Netwise building, so decide on site limits and support.
123-reg - Best for Keeping Domains and Hosting in One UK Account
From USD 2.66/mo (GBP 1.99) for 3 years, renews at USD 9.33 (GBP 6.99) | 25 GB NVMe | 14-day refund
USD 2.66 a month (GBP 1.99) buys three years of 123-reg's Economy plan. The next three years cost USD 9.33 a month (GBP 6.99), a 3.5x step. That renewal matches Kualo's Solo to the penny, and Kualo's price comes with a renewable-energy certificate.
123-reg's entire environmental statement is one line on its About page: its "eco-friendly data centres are powered by low-energy systems." There's no renewable-energy claim, no certificate and no Green Web Foundation entry. (Credit where it's due: that's more modest than a green badge with nothing behind it.) It stays on this page because it was on the previous version, and removing it quietly would hide that finding.
The hosting itself is ordinary in a useful way. Economy gives one site 25 GB of NVMe (fast flash storage), daily backups, cPanel and DDoS protection against floods of junk traffic. 123-reg has sold UK domains since 2000 and has been part of GoDaddy since 2017. Refunds are tight: 14 days, and you have to phone to ask.
Pros
- 25 GB NVMe on the entry plan
- Daily backups and DDoS protection included
- Domains and hosting on one UK bill
Cons
- No renewable claim, certificate or directory entry
- Economy renews at 3.5x the entry price
- 14-day refund, the shortest on this page
Pricing: Economy USD 2.66/mo (GBP 1.99) on a three-year term, USD 95.60 (GBP 71.64) upfront, renewing at USD 335.79 (GBP 251.64) per three years. Deluxe USD 3.99 to USD 12.00 (GBP 2.99 to 8.99). Ultimate USD 6.66 to USD 16.00 (GBP 4.99 to 11.99). Maximum USD 7.99 to USD 21.34 (GBP 5.99 to 15.99).
Best for: someone whose domains already live at 123-reg and who wants a single bill. Skip if: green credentials are the reason you're reading this page.
Don't buy 123-reg as an eco host; it doesn't claim to be one. If your domains are there, keep them and point them at Kualo or Krystal. Both cost the same USD 9.33 to 9.34 at renewal, with evidence attached. If you want the lowest bill, Mythic Beasts renews at USD 3.34.
HostPapa - Best for Cheap NVMe Storage (Not a Green Pick)
From USD 2.60/mo (GBP 1.95) for 3 years, renews at USD 6.66 (GBP 4.99) | 25 GB NVMe | Nearest server: Amsterdam | 30-day refund
Where GreenGeeks still publishes a 2025 renewable-energy report, HostPapa's UK site no longer mentions energy at all. HostPapa removed the green-energy section from its UK homepage between 25 September and 4 December 2024. Today its plan, About and data-centre pages say nothing about renewables either.
Older reviews, including the previous version of this page, still describe HostPapa buying RECs. We couldn't find that claim on any current HostPapa page. HostPapa has no Green Web Foundation entry in the UK, Canada or the US, and its domains pass the check only through Cloudflare. Our HostPapa vs GreenGeeks comparison covers the two on speed and pricing.
As plain hosting, the numbers are decent. Essentials gives 25 GB of NVMe for USD 2.60 (GBP 1.95) and renews at USD 6.66 on a three-year term. That's a 2.6x step, against GreenGeeks' 4.7x. The data centres are Toronto, Los Angeles, Buffalo, Miami and Amsterdam, so UK traffic goes to Amsterdam. HostPapa bought the US host Hostwinds on 29 April 2026, adding Seattle, Dallas and Amsterdam facilities, none of them in the UK.
Pros
- 25 GB NVMe for USD 2.60/mo
- Renewal prices published for every billing term
- CloudLinux isolation, CDN and staging on Essentials
Cons
- No current green claim and no directory entry
- No UK data centre; Amsterdam is the nearest
- Monthly renewal reaches USD 13.33 (GBP 9.99)
Pricing: Essentials USD 2.60/mo (GBP 1.95) on 36 months. It renews at USD 6.66 (GBP 4.99) on 36 months, USD 10.66 (GBP 7.99) on 12, or USD 13.33 (GBP 9.99) monthly. Growth USD 3.27 (GBP 2.45); 5 sites, 100 GB. Premium USD 3.94 (GBP 2.95); 200 GB. Elite USD 6.61 (GBP 4.95). 30-day refund.
Best for: a budget site that needs room to grow and isn't choosing a host for its energy source. Skip if: you came here for green hosting; Mythic Beasts costs USD 0.74 more a month and has published evidence.
HostPapa is a budget storage pick, not an eco pick, and we've labelled it that way. Buy it for 25 GB at USD 2.60 if energy isn't your filter. If it is, Mythic Beasts carries directory-verified evidence for a little more, and Krystal puts you on a London server.
SiteCountry - Best for Very Cheap Side Projects Hosted Outside the UK
From USD 1.31/mo (GBP 0.98) for 4 years, renewal unpublished | 100 GB NVMe | No UK server | 30-day refund
Need 100 GB for a hobby project and don't care where the server sits? SiteCountry's price is hard to argue with. Premium Cloud Lite costs USD 1.31 a month on a four-year term, or USD 62.64 (GBP 46.94) upfront. That's less than 19 months of Mythic Beasts' Web 25, for 20 times the storage.
The green side is a label and nothing more. SiteCountry's data-centre page says "green-friendly hosting" without naming an energy source, certificate or partner. It has no Green Web Foundation entry. Its servers are in Dallas or North Carolina, Germany or Poland, and India, and none of them is in the UK.
Read the terms before paying for four years. The renewal price isn't published; the only reference is the struck-through USD 4.35 list price, 3.3 times the four-year rate. Refunds cover the first purchase within 30 days, never renewals. (Four years is a long time to trust a sale price.) The terms also let SiteCountry delete an expired account's data from 24 hours after expiry. A missed renewal can cost you the site.
Pros
- 100 GB NVMe and 100 sites for USD 1.31/mo
- LiteSpeed and CloudLinux on the entry plan
- 30-day refund on the first purchase
Cons
- No UK data centre and no green evidence
- Renewal price not published
- Expired data can go after 24 hours
Pricing: Premium Cloud Lite USD 1.31/mo on 4 years (USD 62.64 upfront) or USD 2.17/mo on 1 year (USD 26.06); list price USD 4.35. 100 sites, 100 GB NVMe, 2 GB RAM, 90 GB bandwidth. Pro starts at USD 2.19 and Turbo at USD 2.82 on the same four-year term. These are summer-sale prices, checked on 19 September 2026.
Best for: a test site or side project where storage per dollar is the only metric. Skip if: the site earns money, serves UK visitors, or needs to count as green.
SiteCountry doesn't belong on a green shortlist on current evidence. For a throwaway project, it's the cheapest storage on the page. For anything that matters, Mythic Beasts costs about USD 2 more a month, sits in the UK and has evidence.
Krystal - Best Overall Eco Host for UK Sites
From USD 9.34/mo (GBP 7), same at renewal | 10 GB NVMe | Netwise East, London | 99.99% uptime guarantee | 60-day refund
Krystal is the benchmark the rest of this list gets measured against. It rents space in Netwise's East London data centre, where power is matched 100% with renewables. It has been a certified B Corp since 2023, meaning B Lab audits its environmental and governance practices. It also plants a tree every month for each active client.
What sets Krystal apart is how carefully it words the claim. Its green page says "matched", not "powered", and explains that grid electricity can't be traced to one wind farm. It also quotes a PUE of 1.17 for 2024/25, reported under the UK's Climate Change Agreement scheme, which ties energy-tax discounts to efficiency targets. That's less flattering than the 1.10 on Netwise's own page, and more believable for it. The Netwise certificate that backs Kualo's listing covers this building's supply too.
The price is flat. Amethyst costs USD 9.34 (GBP 7) now and at renewal, so three years on monthly billing total USD 336.27 (GBP 252). GreenGeeks' Lite, which starts at a third of the price, costs USD 370.20 over the same three years. Amethyst covers one site and 10 GB, with a 99.99% uptime guarantee and a 60-day refund.
Pros
- London servers on renewable-matched power
- Certified B Corp with a published 2026-2029 climate plan
- Flat pricing and a 60-day refund
- LiteSpeed and NVMe on every plan
Cons
- One site and 10 GB on Amethyst
- Free domain only from the Ruby tier
- Nearly three times Mythic Beasts' entry price
Pricing: Amethyst USD 9.34/mo (GBP 7); 1 site, 10 GB NVMe, 2 GB RAM. Ruby USD 14.68 (GBP 11); 5 sites, 25 GB, free domain. Emerald USD 25.35 (GBP 19); unlimited sites and NVMe storage. Annual billing saves 16% and biennial 25%. Same price at renewal.
Best for: a UK business, freelancer or blogger who wants London servers, published evidence and the same price at renewal. Skip if: your budget is under USD 5; Mythic Beasts delivers verified green UK hosting for USD 3.34.
Krystal is our default recommendation for a UK site that must be green on paper and quick for British visitors. Charities should compare Kualo first, since a free Solo plan beats any price. Developers on a tight budget will get more from Mythic Beasts.
20i - Best for Sites With Traffic Spikes
USD 1.33 (GBP 1) first month, then USD 13.34/mo (GBP 10) | 10 GB | UK data centre | 30-day refund
20i's published green evidence points back at 20i. Its Green Web Foundation entry links to 20i's own green-hosting page, not to a certificate or a data-centre operator's report. That page claims 100% renewable power through "renewable energy suppliers and cloud partners" and a PUE of 1.2 in its own data centres.
The numbers still compare well. A PUE of 1.2 beats the Uptime Institute's 1.54 global average, though it trails the 1.10 that Netwise reports for Krystal's and Kualo's building. 20i's head office at Ransom Wood in Nottinghamshire runs on 2,088 solar panels. Nice touch, but that powers the office, not your server.
The platform is why you'd pay more. 20i autoscales shared sites during traffic spikes, includes a free CDN, and keeps 30 days of site backups and 60 days of database backups. Startup costs USD 13.34 (GBP 10) after a USD 1.33 first month. That's USD 4 more than Krystal's Amethyst for the same 10 GB, or USD 132.11 more over three years.
Pros
- Autoscaling for traffic spikes, plus a free CDN
- 30-day site and 60-day database backup retention
- UK, US and Singapore data centres from one account
Cons
- Only published green evidence is 20i's own page
- USD 13.34 for one site and 10 GB
- Prices can change on 14 days' notice
Pricing: Startup USD 1.33 (GBP 1) for month one, then USD 13.34/mo (GBP 10); 1 site, 10 GB, 50 GB bandwidth. Plan 1 USD 26.69 (GBP 20). Plan 2 USD 53.38 (GBP 40) for 3 sites. No contract. The plan page doesn't say whether prices include VAT. 30-day refund, one per customer.
Best for: a UK shop or campaign site that sees sudden traffic bursts and needs the host to absorb them. Skip if: you run a steady brochure site; Krystal is USD 4 a month cheaper with stronger evidence.
Choose 20i for autoscaling and long backup retention, not for the strongest green paperwork. If documentation matters most, Kualo's REGO-backed Solo costs USD 4.01 less. If price matters most, Mythic Beasts costs a quarter as much.
Mythic Beasts - Best Budget Verified-Green UK Hosting
From USD 3.34/mo (GBP 2.50), same at renewal | 5 GB | UK data centres | Refund period not published
USD 3.34 a month (GBP 2.50). That's the cheapest verified-green UK hosting we found, and no promotional rate hides behind it. Web 25 includes 5 GB of storage, 100 GB of bandwidth, one MySQL database, and unlimited domains and mailboxes.
Mythic Beasts has been verified by the Green Web Foundation since March 2024. Its hosting runs across five UK and EU data centres, including Telehouse South and Digital Realty's Sovereign House in London. The directory entry links energy reports from Telehouse, Digital Realty and Equinix. Its own blog is unusually frank about the limits. The data centres buy as much renewable electricity as they use, not hour by hour, and backup generators still run on fossil fuel.
The trade is a more technical feel. Shell access is a separate option, and PostgreSQL is available on request. Backups run daily, with a guarantee to restore files to no more than 36 hours before a failure. Web 25 is 64% cheaper than Kualo's Solo but holds half the storage. Web 35 closes that gap at USD 4.67 (GBP 3.50) for 10 GB.
Pros
- Cheapest verified-green UK plan at USD 3.34/mo
- Evidence from named data-centre operators
- Unlimited domains and mailboxes
- Flat pricing, no promo rate
Cons
- Only 5 GB on Web 25
- No published refund period
- Technical feel; shell access is a separate option
Pricing: Web 25 USD 3.34/mo (GBP 2.50); 5 GB, 100 GB bandwidth, 1 database. Web 35 USD 4.67 (GBP 3.50); 10 GB. Web 70 USD 9.34 (GBP 7); 25 GB. The range tops out at Web 400, USD 53.38 (GBP 40) for 400 GB. Same price at renewal.
Best for: developers, hobbyists and small organisations who want UK servers with named renewable sources for the least money. Skip if: you want a guaranteed refund window; Krystal and Kualo both give 60 days.
Mythic Beasts gives the most for the money here, provided 5 or 10 GB is enough. It beats every unverified budget host here on evidence, and every verified host on price. Pick Krystal instead if you want a 60-day refund and a 99.99% uptime guarantee.
GreenGeeks Web Hosting
Eco Web Hosting
Kualo Web Hosting
123-reg
HostPapa
SiteCountry
Krystal Hosting
20i
