海角视频

Fibre connectivity is one of the most decisive factors in determining where data centres can be built, how they perform and whether they remain competitive in the long term. For local authorities, developers and operators, it is increasingly clear that power and land alone cannot carry a project. Without resilient, diverse fibre routes, the most ambitious plans can stall, and regions risk falling behind in the race to deliver digital and economic growth. 

Although nearly three quarters of UK premises now have access to full fibre networks, with availability reaching 73% by early 2025, this national picture hides significant gaps in the places that matter most for data centres. Full fibre rollout continues to accelerate, and is forecast to reach 27 million premises by the end of 2026[1], supported by gigabit coverage that could exceed 94% in the same period. But capacity alone does not guarantee suitability. Much of the build out has accumulated where consumer markets are strongest, rather than where high resilience digital infrastructure can underpin future data centre clusters. Multiple network operators have focused investment in overlapping footprints, while other areas remain underserved. Meanwhile, major players such as Nexfibre are investing at scale, committing 拢4.5 billion to national rollout, yet these deployments still require scrutiny to determine whether they offer the diversity, redundancy and strategic routing that advanced workloads demand. For planners, the real test is not how much fibre the UK has, but whether the right fibre, in the right configuration, is available in the right places to support long term digital growth.[2]

At first glance, fibre may appear to be a technical detail. In reality, it operates at two interconnected layers that profoundly shape location decisions. One sits offshore, where subsea cables carry global traffic to the UK and define the quality of international connectivity on which hyperscalers rely. The other sits on land, where domestic roll out determines the resilience, redundancy and path diversity that operators need to deliver the low latency performance modern workloads demand. Both layers must work together if regions are to create conditions that genuinely support data centre investment. 

Navigating these two layers introduces a level of complexity that local authorities cannot ignore. The offshore networks that carry global traffic into the UK sit entirely outside local control and are increasingly owned and operated by private technology companies whose investment decisions reflect commercial and geopolitical priorities rather than regional planning needs. By contrast, the domestic fibre landscape involves a wide and often fragmented set of stakeholders, from national regulators and wholesale network operators to local authorities, utility providers and private carriers. Each holds influence over different parts of the system, but no single organisation is responsible for delivering the resilient, diverse routes that data centres require. For planners, this creates an ecosystem in which responsibilities are distributed, incentives differ and coordination is essential to ensure that land, power and fibre planning align in the right places and at the right time.

The rise of AI, high鈥憄erformance computing and content鈥憆ich digital services has accelerated pressure on these systems. Gerry Skivington, an associate in 海角视频鈥檚 digital infrastructure team has worked for hyperscale data centre operators in previous roles. Reflecting on an operational shift at one of the major platforms, he recalled that even a small user鈥慺acing design change cascaded into a huge increase in infrastructure demand. 鈥淚t鈥檚 not always thought-through how a seemingly tiny change can take so much extra bandwidth and require extra servers. For example, when Facebook introduced automatic video plays when scrolling. It made an enormous difference overnight.鈥� 

For local authorities, this highlights a critical point: demand does not grow linearly. It jumps, often dramatically, and fibre networks must be ready to absorb those shocks. 

The strategic importance of subsea gateways

The UK鈥檚 international connectivity is anchored in subsea fibre networks which, over recent years, have undergone a profound shift. Ownership has moved from traditional telecoms operators to global content providers and hyperscalers who now build and operate cables that run at capacities unimaginable only a decade ago.

While historically, subsea gateways into the UK have been led by natural geography 鈥� with strong connections in the South West where fibre cables first arrive from the Atlantic, Luke McGlone, 海角视频鈥檚 head of digital infrastructure, says the modern fibre optic connectivity coming into the UK increasingly reflects commercial, operational and geopolitical drivers.

Understanding these dynamics is vital for planners because subsea landing points act as powerful attractors for data centre clusters. They offer the lowest latency paths to international markets and the most efficient routes for cloud traffic. This is why regions near these gateways can find themselves at a significant advantage.

The technology shifts are equally important. Luke says subsea systems have advanced from the DWDM era to the new generation of SDM cables capable of 鈥�200 or 300 terabits per second, two or three hundred times the capacity of the fibre installed 20 years ago.鈥� These leaps in backbone capability will shape the next wave of digital services, from immersive reality to real鈥憈ime analytics, and regions with direct, resilient access to these systems will be best placed to host facilities built for powering those future technologies.

There is also a sovereignty dimension. Countries and regions must remain aware of how dependent they are on privately鈥憃wned subsea systems and consider how policy, partnerships and infrastructure planning can reinforce long鈥憈erm resilience. 

For local authorities, these changes in the subsea and domestic fibre landscape create a strategic environment that is far more complex than it first appears. Although offshore connectivity sits beyond their direct control, its influence on latency, resilience and market attractiveness means planners must understand where subsea gateways land and how this shapes regional potential. On land, the challenge is different. Here, authorities operate within a fragmented ecosystem of network operators, backhaul providers, regulators and private investors, each driving decisions according to their own commercial priorities. Local authorities therefore need to navigate overlapping interests, safeguard future fibre corridors, coordinate street works and engage early with carriers to ensure that diverse, resilient routing aligns with emerging growth zones. This is where our consulting perspective becomes essential: supporting authorities to interpret the infrastructure landscape, convene the right stakeholders and translate long鈥憈erm spatial and economic ambitions into fibre strategies that make their regions genuinely investable for data centre operators.

Domestic fibre: the decisive layer for site viability

If subsea infrastructure provides the strategic gateway, domestic fibre determines whether a specific site is truly viable. Modern data centres require a level of resilience that goes far beyond simple connectivity. Multiple fully diverse routes, often three or four, are now a standard expectation. These routes must take physically separate paths, enter the site at different points and connect to distinct backbone or carrier nodes. A single point of failure is unacceptable, and any region that cannot demonstrate genuine resilience will struggle to attract operators.

For planners, this means fibre cannot be treated as a passive service that will appear if needed. Route diversity 鈥� multiple fibre paths for resilience purposes 鈥� requires early protection of corridors, proactive engagement with carriers and clarity about long鈥憈erm routing.

But the UK鈥檚 domestic fibre infrastructure can be significantly uneven. Parts of the nation鈥檚 fibre infrastructure is aging and urgently in need of upgrade. Meanwhile other regions, such as Manchester and parts of Scotland, have been growing in appeal to data centre operators, due to improving connectivity and the operational advantages of cooler climates.

Crucially, fibre interacts directly with other infrastructure systems. A site may sit close to a major substation or suitable land parcel, but if fibre cannot be brought to it at the scale required, the opportunity collapses. Conversely, investment in resilient fibre can elevate regions with constrained power or land, because it signals serious long鈥憈erm planning and market readiness. 

Again, for local authorities, the implications are clear. Domestic fibre resilience is fast becoming a determining factor in whether regions can compete for data centre investment, yet it is also the part of the system most within their influence. The opportunity lies in anticipating demand rather than reacting to it. This means safeguarding future fibre corridors, understanding where diverse routes can realistically be delivered, and working early with carriers, energy providers and developers to shape viable locations. The complexity comes from the fragmented ownership of networks and the need to balance planning certainty with commercial realities. Authorities that map their strengths and weaknesses, engage in structured dialogue with industry and integrate fibre strategy into wider land and energy planning will be far better placed to attract operators and secure the economic benefits that follow.

A further shift in the national landscape is emerging through Project Reach, the UK鈥檚 largest core fibre deployment in decades. Neos Networks is delivering more than 1,000km of new high鈥慶apacity fibre along strategic rail corridors, connecting key business hubs, data centres and subsea landing stations through a secure, future鈥憄roof national backbone[3]. This investment is designed to serve both rail operations and the wider digital economy, with the capacity and low latency performance needed to support AI, cloud services and real鈥憈ime analytics – strengthening the routes that will determine how competitively the UK can operate in a data鈥慸riven global market.

The need for a coordinated national approach

National-scale planning can unlock significant opportunity. For example, Ireland鈥檚 early liberalisation of its telecoms market led multiple operators to build dense metro and long鈥慼aul fibre networks, creating widespread dark鈥慺ibre availability. So when hyperscalers arrived, the high鈥慶apacity infrastructure was already in place rather than needing to be built from scratch. By building a fast fibre ring aligned with tax incentives, Ireland created a ready鈥憁ade environment that hyperscalers could connect into immediately. Gerry Skivington noted that as soon as those tax incentives were offered, all the big players took notice, especially given the benefit of Ireland鈥檚 direct subsea connection to the US.

The UK could draw similar lessons. Coordinated national planning for fibre, aligned with energy and spatial strategies, would give local authorities more certainty and allow developers to plan with confidence. Hyperscalers already invest heavily in their own energy and fibre infrastructure, but often in ways that prioritise their shareholder obligations rather than long鈥憈erm national resilience.

Local authorities therefore have a role to play in shaping the conditions that make national ambition deliverable at a local level. This means developing a clear understanding of current and planned fibre assets, mapping where route diversity is achievable, and safeguarding corridors that future routes will depend on. It also requires convening carriers, energy networks, landowners and developers early in the planning process so that investment decisions align with long term spatial priorities rather than short term commercial cycles. Our advice is that authorities treat fibre as strategic infrastructure, integrate it fully into growth frameworks and work with technical partners to build the evidence, modelling and stakeholder alignment needed to influence national providers and attract sustainable private investment.

Hyperscale data centres now operate at a scale that would have been unthinkable only a few years ago, with individual facilities routinely deploying fibre counts once reserved for national鈥憀evel networks. Modern facilities use ultra鈥慼igh鈥慺ibre鈥慶ount cables carrying between 1,728 and 6,912 strands as standard, while cutting鈥慹dge AI campuses are pushing this even further with 6,912鈥慺ibre cables deployed at scale. Inside the data hall, the density is even more striking. A traditional cloud rack might have required 576 to 864 fibres, yet an AI rack now demands as many as 1,152 fibres per rack.[4]

Toward a system鈥憃f鈥憇ystems approach

Fibre cannot be separated from the other infrastructure systems shaping digital growth. Subsea gateways influence domestic routing. Domestic resilience influences land allocation. Land choices influence cooling strategies, water demand, energy and heat recovery potential. Each system relies on the others, and approaching them in isolation risks undermining the very opportunities regions hope to capture.

A system鈥憃f鈥憇ystems approach, supported by clear evidence and coordinated planning, offers a way through. It enables local authorities to make informed decisions, helps operators understand long鈥憈erm delivery confidence and gives planners a tool to balance digital growth with wider place priorities. It is also fundamental to ensuring that the UK remains competitive as global demand shifts again, driven by AI, immersive content and yet鈥憈o鈥慹merge use cases.

Fibre is not simply an engineering consideration. It is the connective tissue of the modern economy, and regions that treat it as strategic infrastructure will be the ones that unlock sustainable, resilient and investable digital growth.

This article is part four of a series. Read part five here: Strategic land planning for the UK鈥檚 data centre future

Get in touch with Yalena Coleman, who is leading on data centre advisory for 海角视频, to continue the conversation.

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[1]

[2] https://www.ofcom.org.uk/phones-and-broadband/coverage-and-speeds/connected-nations-planned-network-deployment/connected-nations-2025

[3] https://neosnetworks.com/resources/blog/project-reach-the-uks-biggest-core-fibre-network-deployment-in-decades-will-power-the-uks-digital-ambitions/

[4] https://www.commscope.com/blog/2020/adapting-to-higher-fiber-counts-in-the-data-center/