59 facilities · 30 operators · 984 MW tracked
Colocation in London: pricing, providers and capacity
30 operators run 59 tracked data centers in London (50 operational, 984+ MW published, 7 AI-ready). Below: the published price benchmark for this market, retail list prices where operators publish them, who owns capacity here, and how to get comparable quotes. Catalog data from primary sources; no estimates.
Greater London metro market: all facilities, capacity and operators →
How much does colocation cost in London?
30 operators run 59 tracked data centers in London; the largest by sites is Digital Realty (6). Wholesale colocation in London is benchmarked at $213 per kW per month (CBRE, Global Data Center Trends 2026 (17 June 2026), Fig. 5 — Q1 2026, 250–500 kW, H2 2025 – Q2 2026). No operator in this market publishes a retail rate card; prices are quoted on request.
Wholesale benchmark
$213 /kW·mo
London · CBRE, Global Data Center Trends 2026 (17 June 2026), Fig. 5 — Q1 2026, 250–500 kW · H2 2025 – Q2 2026
250–500 kW requirement, N+1/Tier III; midpoint of the published asking-rate range; CBRE: rents in Europe’s four major markets rose year-over-year in Q1 2026
Published retail prices
No operator in London publishes a retail rate card on its website. That is normal for wholesale-led markets and says nothing about price level — request quotes with one brief.
Colocation providers in London
Operators with tracked data centers in London, sorted by sites, then published capacity. Sites / operational; MW is the sum of what each operator publishes for these sites. Some entries are hyperscaler or enterprise sites that do not sell colocation — check the facility card.
| Operator | Sites / live | Published MW | Top-scored facility | Certifications | AI-ready |
|---|---|---|---|---|---|
| Digital Realty | 6 / 6 | not published | LON1 | SOC 2, PCI-DSS, ISO 9001 | — |
| Colt DCS | 5 / 3 | 169 | Colt DCS London 4 (Hayes) | not published | 2 |
| Telehouse | 5 / 5 | 18 | Telehouse North Two | ISO 9001, ISO 14001, ISO 27001 | — |
| Stellanor | 4 / 4 | not published | Stellanor London East | not published | — |
| VIRTUS Data Centres | 3 / 3 | 129 | VIRTUS LONDON2 (Hayes) | BREEAM Good, Uptime Tier III | — |
| Ark Data Centres | 3 / 1 | 99 | Ark Union Park (Hayes) | Tier 3 | 2 |
| Iron Mountain | 3 / 2 | 61 | Iron Mountain LON-1 | ISO 27001, ISO 9001, ISO 14001 | — |
| Equinix | 3 / 3 | not published | Equinix LD8 | Climate Neutral Data Centre Pact, Cyber Essentials, EU Code of Conduct | — |
| Global Switch | 3 / 2 | not published | Global Switch London East | not published | — |
| Pure Data Centres Group | 2 / 1 | 90 | Pure Data Centres — London Brent Cross, Building 1 (LON01) | Platinum Zero Waste to Landfill Certification | — |
| Vantage Data Centers | 2 / 2 | 75 | Vantage LHR2 (London II Campus) | BREEAM Excellent | — |
| iomart | 2 / 2 | 11 | iomart Central London Data Centre (DC2) | ISO 9001, ISO 27001, ISO 22301 | — |
| Ada Infrastructure | 1 / 0 | 210 | Ada Infrastructure Docklands | not published | 1 |
| Pure Data Centres Group / SEGRO (JV) | 1 / 0 | 72 | Pure Data Centres — London Park Royal | not published | 1 |
| NTT Global Data Centers | 1 / 1 | 32 | NTT London 1 Data Center | not published | — |
| Serverfarm | 1 / 1 | 11 | ServerFarm LON1 London (Feltham) | not published | 1 |
| Templus | 1 / 1 | 4 | Templus LON01 | Tier III Ready (per operator) | — |
| DataBank | 1 / 1 | 4 | DataBank LHR1 | not published | — |
| Arelion | 1 / 1 | not published | Arelion London HEX | not published | — |
| China Mobile International | 1 / 1 | not published | 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 | — |
| Cogent Communications | 1 / 1 | not published | Cogent London CDC | not published | — |
| Docklands Data Centre | 1 / 1 | not published | QiComm Tutis Point | not published | — |
| Epsilon | 1 / 1 | not published | Epsilon Global Hubs London | not published | — |
| Fujitsu | 1 / 1 | not published | 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 | — |
| IP House | 1 / 1 | not published | IP House Data Centre | not published | — |
| Keppel DC REIT | 1 / 1 | not published | Keppel DC GV7 London | not published | — |
| Options Technology | 1 / 1 | not published | Options IT - Park Royal Datacenter (PRDC) | not published | — |
| OVHcloud | 1 / 1 | not published | OVHcloud London Data Center (Erith) | not published | — |
| Telstra | 1 / 1 | not published | London Hosting Centre | not published | — |
| Volta Data Centres | 1 / 1 | not published | Volta Data Centres — Great Sutton Street | ISO 9001, ISO 14001, ISO/IEC 27001 | — |
Availability in London: what the numbers do and do not say
Published megawatts describe how facilities are designed, not how much power is available to a new customer today. Vacancy is confirmed only in an operator's proposal for a specific hall and ready-for-service date. Where operators have told Coloprice that a market is sold out to a date, the facility cards say so; otherwise assume nothing and ask each provider the same question.
What the colocation price includes — and what it does not
- Included in the base fee: rack or cabinet space, a committed power circuit, cooling, physical security, and usually a basic remote-hands allowance.
- Billed separately: metered electricity above the allowance (or a per-kWh rate on retail contracts), cross-connects, IP transit, additional remote hands, and one-off setup or installation fees.
- Wholesale contracts add annual escalators, ramp schedules and power-commitment minimums; retail contracts add overage rates and bandwidth caps. Compare providers on the same committed kW, density, term and connectivity.
See also
Weekly digest: price moves, capacity and deals in one email.
FAQ
Who are the largest colocation providers in London?
By tracked sites: Digital Realty with 6. By published IT capacity: Ada Infrastructure with 210 MW. Facility counts and MW come from operator pages and registries; the table above lists every operator with a tracked site in London, including some that do not sell space.
Is there colocation capacity available in London right now?
Coloprice tracks 59 facilities here (50 operational, 9 under construction or announced) but does not track vacancy. Availability, rack density and delivery dates are confirmed only in a current proposal for a specific hall — send the same brief to several providers and compare.
How do I get comparable colocation quotes in London?
Send every provider one brief: committed kW, density per rack, redundancy, carriers and cloud on-ramps, start date, term and expansion rights. Ask for space, power, metered electricity, cross-connects, installation and remote hands as separate lines, then compare against the London benchmark. The form below routes one brief to matching operators; no operator pays for position.
Get colocation quotes in London
One brief, several operators with capacity in London, United Kingdom, same terms. Independent — no operator pays for position.
Colocation in London? One brief, several quotes.
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