| Pulsant | 14 / 14 | 22 | Pulsant Edinburgh SC-1 (South Gyle) | 未公開 | — |
| Digital Realty | 13 / 13 | 未公開 | LON1 | SOC 2, ISO 27001, PCI-DSS | — |
| Equinix | 13 / 13 | 未公開 | Equinix LD5 | Climate Neutral Data Centre Pact, Cyber Essentials, ISO 9001 | 1 |
| iomart | 8 / 8 | 11 | iomart Central London Data Centre (DC2) | ISO 9001, ISO 27001, ISO 22301 | — |
| Stellanor | 8 / 8 | 5 | Stellanor Woking | 未公開 | — |
| Colt DCS | 6 / 4 | 204 | Colt DCS London 4 (Hayes) | 未公開 | 2 |
| CyrusOne | 6 / 5 | 158 | CyrusOne LON2 | ISO 14001 | — |
| Ark Data Centres | 6 / 4 | 99 | Ark Spring Park | ISO 27001, ISO 22301, ISO 9001 | 3 |
| NTT Global Data Centers | 6 / 6 | 85 | NTT London 1 Data Center | 未公開 | — |
| Telehouse | 5 / 5 | 18 | Telehouse North Two | ISO 9001, ISO 14001, ISO 27001 | — |
| VIRTUS Data Centres | 4 / 4 | 192 | VIRTUS LONDON2 (Hayes) | BREEAM Good, Uptime Tier III | — |
| Iron Mountain | 4 / 3 | 61 | Iron Mountain LON-1 | ISO 27001, ISO 9001, ISO 14001 | — |
| Yondr Group | 3 / 2 | 100 | Yondr London Campus - Building 1 | 未公開 | — |
| Vantage Data Centers | 3 / 3 | 75 | Vantage CWL1 Cardiff Campus | Tier III standards, ISO 9001, ISO 14001 | 1 |
| Kao Data | 3 / 2 | 71 | Kao Data Harlow Campus | BREEAM Excellent, OCP-Ready, NVIDIA DGX-Ready | 2 |
| (aq) networks | 3 / 3 | 未公開 | aql DC2 | 未公開 | — |
| ANS Group | 3 / 3 | 未公開 | ANS - MAN4 | 未公開 | — |
| Global Switch | 3 / 2 | 未公開 | Global Switch London East | 未公開 | — |
| Keppel DC REIT | 3 / 3 | 未公開 | Keppel DC London (Bracknell) | 未公開 | — |
| nLighten | 3 / 3 | 未公開 | nLighten Birmingham (BHX1) | Uptime Institute Tier III Certification of Design Documents, ISO 27001 | — |
| Node4 | 3 / 3 | 未公開 | Node4 Derby Data Centre | ISO 27001 accredited, PCI compliant | — |
| Vocalink | 3 / 3 | 未公開 | Vocalink England, North Yorkshire - Primary Data Hall | Uptime Institute Tier III Certification of Design Documents Tier III Certification of Constructed Facility | — |
| Pure Data Centres Group | 2 / 1 | 90 | Pure Data Centres — London Brent Cross, Building 1 (LON01) | Platinum Zero Waste to Landfill Certification | — |
| Custodian Data Centres | 2 / 2 | 10 | Custodian Data Centres DA2 | ISO 27001 | — |
| Templus | 2 / 2 | 7 | Templus Data Centres Leeds | Tier III Ready (per operator) | — |
| brightsolid | 2 / 2 | 未公開 | brightsolid Aberdeen | Uptime Institute Tier III Certification of Design Documents, ISO 27001, ISO 22301 | — |
| China Mobile International | 2 / 2 | 未公開 | China Mobile International United Kingdom 1 Data Centre, Phase 1 | Uptime Institute Tier III Certification of Design Documents Tier III Certification of Constructed Facility Tier III Silver Certification of Operational Sustainability | — |
| Exascale | 2 / 2 | 未公開 | Exascale - Telford (TEL0) | 未公開 | — |
| Imerja | 2 / 2 | 未公開 | Elstree Customer Hosting Centre | 未公開 | — |
| Melbourne Server Hosting | 2 / 2 | 未公開 | iomart DC6 Turing House | 未公開 | — |
| The Bunker Secure Hosting | 2 / 2 | 未公開 | The Bunker (Ash) | 未公開 | — |
| VeloxServ Communications | 2 / 2 | 未公開 | VeloxServ DC1 - Wolverhampton | 未公開 | — |
| CX Tech | 1 / 0 | 1,000 | CX Technology Campus (Chapelcross) | 未公開 | — |
| Ada Infrastructure | 1 / 0 | 210 | Ada Infrastructure Docklands | 未公開 | 1 |
| Nscale | 1 / 1 | 90 | Nscale Loughton | 未公開 | 1 |
| Pure Data Centres Group / SEGRO (JV) | 1 / 0 | 72 | Pure Data Centres — London Park Royal | 未公開 | 1 |
| DataVita | 1 / 1 | 24 | DataVita Fortis (DV1) | Uptime Institute Tier III Certification of Design Documents, Uptime Institute Tier III Certification of Constructed Facility | — |
| Csquare | 1 / 1 | 15 | Csquare LHR3 | SOC 1 Type II, SOC 2 Type II, PCI-DSS | 1 |
| Serverfarm | 1 / 1 | 11 | ServerFarm LON1 London (Feltham) | 未公開 | 1 |
| Aptum Technologies | 1 / 1 | 10 | Aptum Portsmouth (Havant) Data Center | Tier II+, ISO 27001, PCI-DSS v3.2.1 | — |
| DataBank | 1 / 1 | 4 | DataBank LHR1 | 未公開 | — |
| 186k | 1 / 1 | 未公開 | Leeds DC1 | 未公開 | — |
| AIMES | 1 / 1 | 未公開 | ARO DC2 Kilby House (AIMES) | 未公開 | — |
| Arelion | 1 / 1 | 未公開 | Arelion London HEX | 未公開 | — |
| ASK4 | 1 / 1 | 未公開 | ASK4 DC1 - Sheffield | 未公開 | — |
| AtlasEdge | 1 / 1 | 未公開 | AtlasEdge Manchester (MAN001) | ISO 27001, ISO 14001 | — |
| Bytemark | 1 / 1 | 未公開 | Bytemark YO26 DC1 | 未公開 | — |
| C.C.S. (Leeds) | 1 / 1 | 未公開 | DC14-Leeds | 未公開 | — |
| Cable & Wireless UK | 1 / 1 | 未公開 | Cable & Wireless UK Gravelly Hill Data Centre | Uptime Institute Tier III Certification of Design Documents Tier III Certification of Constructed Facility | — |
| Centersquare | 1 / 1 | 未公開 | Centersquare London (LHR3) | 未公開 | — |
| ChunkyChips.net | 1 / 1 | 未公開 | ChunkyChips Data Centre | 未公開 | — |
| Cloud Innovation | 1 / 1 | 未公開 | Cloud Innovation Poole Data Center | 未公開 | — |
| Cogent Communications | 1 / 1 | 未公開 | Cogent London CDC | 未公開 | — |
| CustodianDC | 1 / 1 | 未公開 | Custodian CDC Maidstone 1 | 未公開 | — |
| Docklands Data Centre | 1 / 1 | 未公開 | QiComm Tutis Point | 未公開 | — |
| DSM (GB) | 1 / 1 | 未公開 | MyHostingSpace - Peterborough | 未公開 | — |
| Epsilon | 1 / 1 | 未公開 | Epsilon Global Hubs London | 未公開 | — |
| European Data Centre | 1 / 1 | 未公開 | European Data Centre — Edinburgh Lochside | ANSI/TIA-942-B Facility - Rated 2 | — |
| Fastnet | 1 / 1 | 未公開 | Fastnet Brighton Datacentre | 未公開 | — |
| Fujitsu | 1 / 1 | 未公開 | Fujitsu Services London North Data Centre | Uptime Institute Tier III Certification of Constructed Facility Tier III Certification of Design Documents Tier III Gold Certification of Operational Sustainability | — |
| Galaxy Data Centers | 1 / 1 | 未公開 | Redhill Datacenter | 未公開 | — |
| Grid Hosting | 1 / 1 | 未公開 | Grid Hosting Limited | 未公開 | — |
| High Availability Hosting | 1 / 1 | 未公開 | HA Hosting DC2 | 未公開 | — |
| Indectron | 1 / 1 | 未公開 | Indectron GCR1 - Gloucester, Shield House | 未公開 | — |
| IONOS | 1 / 1 | 未公開 | IONOS / Fasthosts Worcester Data Centre | Uptime Institute Tier IV Certification of Constructed Facility | — |
| IP House | 1 / 1 | 未公開 | IP House Data Centre | 未公開 | — |
| Legend Communications | 1 / 1 | 未公開 | Legend Data Centres | 未公開 | — |
| Legend Telecom | 1 / 1 | 未公開 | Legend Bradford | 未公開 | — |
| Lunar Digital Solutions Ltd | 1 / 1 | 未公開 | Lunar Digital Lunar 1 | 未公開 | — |
| MAINFRAME & CYBERNETIC SYSTEMS | 1 / 1 | 未公開 | Bournemouth Data Centre | 未公開 | — |
| Neos Networks | 1 / 1 | 未公開 | Neos Networks Hampshire | 未公開 | — |
| Netwise Hosting | 1 / 1 | 未公開 | Netwise London East (NLE) | 未公開 | — |
| Next Generation Data | 1 / 1 | 未公開 | NGD Newport | 未公開 | — |
| NXLayer | 1 / 1 | 未公開 | Reading Data Centre RDC | 未公開 | — |
| Options Technology | 1 / 1 | 未公開 | Options IT - Park Royal Datacenter (PRDC) | 未公開 | — |
| OVHcloud | 1 / 1 | 未公開 | OVHcloud London Data Center (Erith) | 未公開 | — |
| Prescient Data Centres Northern Ireland | 1 / 1 | 未公開 | Prescient Data Centres Northern Ireland | 未公開 | — |
| Rackspace | 1 / 1 | 未公開 | Rackspace Slough | 未公開 | — |
| Redcentric | 1 / 1 | 未公開 | Redcentric Data Centres Woking | 未公開 | — |
| ServerChoice | 1 / 1 | 未公開 | ServerChoice SC-1 | 未公開 | — |
| Six Degrees | 1 / 1 | 未公開 | Six Degrees Studley North | 未公開 | — |
| Stellium Datacentres | 1 / 1 | 未公開 | Stellium 1 | 未公開 | — |
| Teledata UK | 1 / 1 | 未公開 | Teledata Manchester - Delta House | 未公開 | — |
| Telstra | 1 / 1 | 未公開 | London Hosting Centre | 未公開 | — |
| The UK Grid Network | 1 / 1 | 未公開 | Synergy House Manchester | 未公開 | — |
| UK Dedicated Servers | 1 / 1 | 未公開 | UK Servers Coventry | 未公開 | — |
| Volta Data Centres | 1 / 1 | 未公開 | Volta Data Centres — Great Sutton Street | ISO 9001, ISO 14001, ISO/IEC 27001 | — |
| Wildcard Networks | 1 / 1 | 未公開 | Reliance House | 未公開 | — |
