Infrastructure Has Moved Closer to the Operational Core

UK supply chain operations are making data centre decisions in 2026 that would have seemed excessive five years ago. Warehouse management, transport planning, ERP, EDI, customer portals and automation platforms are now inseparable from day-to-day fulfilment.

AI is increasing compute demand, London capacity remains tight, grid access can take years, and sustainability reporting is placing greater scrutiny on infrastructure choices. For supply chain IT leaders, the issue is no longer simply where servers are housed. It is whether the environment can support continuity, cost control and future workloads without becoming another operational weakness.

A Capacity Market Under Pressure

London and the wider M25 corridor, including Slough, West London and the Thames Valley, remain the centre of the UK data centre market. Demand accelerated through 2024 to 2026 as cloud expansion, generative AI, large language model inference and other compute-intensive workloads increased requirements for space and power. CBRE expects London take-up to exceed new supply for a fifth consecutive year in 2026, while JLL reports that capacity across Europe’s main data centre markets is increasingly being committed before construction is completed.

Power availability is now as significant a constraint as physical space. Grid connection delays have affected large-load developments across West London and the Thames Valley, while the National Energy System Operator has been reforming a connection queue that previously left some viable projects waiting for years. Tight supply and higher development costs are also placing upward pressure on colocation pricing. These conditions are directing greater attention towards regional markets, including Birmingham, Manchester, South Wales, the North East and Scotland, particularly where businesses do not require London-specific latency. Sustainability scrutiny is influencing procurement as well, with qualifying organisations required to report energy use and emissions under Streamlined Energy and Carbon Reporting and others facing broader climate disclosure expectations.

For UK supply chain IT leaders working through these conditions, colocation has become a more routine consideration across logistics, manufacturing, warehousing and distribution. Before comparing facilities or contracts, this guide to how colocation data centres work explains the operational model, including how space, power, cooling, physical security and connectivity are provided while the customer retains ownership and control of its own servers, storage and network equipment.

Four Pressures Behind the Reassessment

The cost of keeping infrastructure on site

Server rooms inside warehouses, plants and offices can remain suitable for small, stable workloads. The difficulty is that their cost extends beyond hardware. Power, cooling, UPS maintenance, physical security, staffing, replacement cycles and downtime exposure all need to be included.

Although manufacturing electricity prices eased during 2025, DESNZ recorded an average of 16.8 pence per kWh in the final quarter, leaving power as a material part of the server-room operating calculation.

Colocation changes the operating model rather than removing the IT estate. The facility provides space, power, cooling, connectivity and physical protection, while the customer retains ownership and control of its servers, storage and network equipment.

Sustainability evidence, not slogans

Streamlined Energy and Carbon Reporting requires qualifying UK businesses to disclose energy and carbon information in their annual accounts. That makes credible supplier data on electricity consumption, energy sourcing and efficiency more useful during procurement.

Power Usage Effectiveness can support comparisons, but it should not be read in isolation. Measurement boundaries, utilisation, resilience and the age of the facility all influence what a headline PUE figure means in practice.

Resilience that matches operational dependence

A warehouse management system outage can interrupt picking, dispatch, stock accuracy and customer communication within minutes. Transport platforms, EDI links and ERP integrations create similar dependencies.

Uptime Institute defines Tier III infrastructure as concurrently maintainable and Tier IV as fault-tolerant. Buyers should still verify certification, operational processes, network diversity and recovery arrangements rather than relying on tier terminology in marketing copy.

Colocation can also make geographic separation easier to design where an organisation needs its recovery environment to sit away from the primary warehouse, plant or office estate.

AI and higher-density computing

Computer vision, forecasting, optimisation and generative AI are increasing the demand for accelerated computing across supply chains. JLL says AI training environments can require 40 to more than 100kW per rack, well beyond the design envelope of many legacy server rooms.

Not every AI workload requires that density. The practical lesson is that power, cooling and connectivity should be assessed before GPU hardware is purchased, not after an existing room reaches its limits.

Power constraints, AI workloads and tighter resilience expectations are forcing UK logistics, manufacturing and distribution leaders to reconsider where critical systems should run.

What IT Leaders Need to Test Before Moving

Start with the workload

Robotics, conveyor controls and production-line systems may need to remain close to the operation. ERP hosting, analytics, data warehousing and batch processing may be stronger candidates for colocation or cloud.

A useful workload map should cover latency, recovery objectives, data sensitivity, integration dependencies, growth and support requirements.

Match geography to the network

Facility selection should reflect warehouses, plants, users, carriers, cloud on-ramps and disaster recovery design. A regional site may offer a better fit than London, where proximity to the capital adds cost without an operational benefit.

Read beyond the rack price

Power commitments, cabinet density, cross-connect fees, remote hands, escalation clauses, change controls and exit terms can materially alter the cost of a multi-year agreement. The commercial comparison only works when each option is modelled on equivalent assumptions.

Plan migration around fulfilment

A move into colocation affects more than the infrastructure team. Connectivity testing, cutover windows, fallback arrangements and post-migration support need to account for production schedules, seasonal peaks and customer commitments.

A technically successful migration can still be an operational failure if orders stop moving.

Regional Choice Is Becoming a Practical Option

London remains the dominant market, but the regional calculation is improving. South Wales offers an established cluster around Newport and Cardiff, Manchester serves northern operations, and planned growth around Newcastle, Teesside and other areas is widening the long-term picture.

Regional does not automatically mean available, inexpensive or resilient. Power, carrier choice, skills and recovery geography still vary by location. The difference in 2026 is that supply chain organisations can begin with their operating footprint rather than assume that serious infrastructure must sit inside the M25.

Power Will Shape the Next Phase

Grid availability will continue to influence where and when new UK capacity is delivered. AI will push parts of the market towards higher-density designs, while sustainability expectations will require more defensible energy and emissions information from suppliers.

Hybrid architecture will remain the practical norm. Edge systems may stay within warehouses or plants, steady enterprise workloads may sit in colocation, and elastic services may remain in public cloud. The strategic task is to make those environments operate as one estate rather than three disconnected technology decisions.

The Decision Cannot Remain in the Backlog

Data centre strategy is now part of supply chain resilience. Capacity pressure, power constraints, reporting expectations and AI have made the old default of leaving infrastructure where it has always been harder to defend without proper analysis.

Colocation is a mainstream option, but not an automatic answer. Workload fit, location, resilience, contract structure and migration risk all need to be tested against operational reality.

The UK data centre landscape of 2030 will be materially different from the landscape of today. UK supply chain IT leaders who use the market conditions of 2026 effectively will typically operate from a stronger position than those who continue to defer the practical decisions those conditions reward.

This article is for general information only and does not constitute IT, procurement, financial or commercial advice. Data centre and colocation decisions should be developed in consultation with qualified professional advisers appropriate to the individual organisation’s requirements.