Symmetrical, uncontended fibre connectivity with guaranteed speeds, built for London businesses that can't afford an unreliable internet connection.
Upload and download at the same guaranteed speed, all day, with no slowdown at peak times when everyone else in the building is online.
Your connection is yours alone — not shared with other businesses in the building or down the street, so performance stays consistent.
Backed by our 99% SLA guarantee and 24/7 monitoring, so connectivity issues are caught and resolved before they become a crisis.
For a business in the City of London or the wider capital, internet connectivity isn't a background utility — it's the thing cloud email, VoIP calls, card payments and remote access to Azure servers all depend on simultaneously. Standard business broadband, even the faster FTTC and FTTP packages, is contended, which means your speed can vary depending on how many other businesses in the same building or exchange are online at the same time. A leased line removes that variable entirely: it's a dedicated fibre circuit running directly to your premises, delivering the same guaranteed speed, symmetrical in both directions, whether it's 9am on a Monday or the middle of a product launch.
London's density makes this especially relevant. Shared office buildings across the City, Canary Wharf, the West End and beyond often have dozens of businesses drawing on the same local infrastructure, and standard broadband simply wasn't designed to guarantee performance under that kind of shared demand. A leased line sidesteps the problem by giving your business its own dedicated circuit, with a service level agreement that puts a number on uptime rather than a vague promise.
We supply and manage leased lines for London businesses alongside the rest of our connectivity and IT support work, which means the same team that keeps your network, cloud email and cloud backup running is also the team looking after the circuit underneath all of it. That matters when something does go wrong — you're not stuck between an ISP and an IT provider each blaming the other while your business is offline.
Pricing for a leased line depends heavily on the size of the circuit and where your premises sit relative to existing fibre infrastructure, which is why we always start with a proper site survey rather than a generic quote. What we can promise upfront is a clear breakdown of installation and ongoing costs, an honest view of realistic delivery timescales for your specific building, and a circuit sized around what your business actually needs today and is likely to need over the next few years, rather than whatever the carrier happens to have easiest to sell.
London's commercial geography ranges from the City of London's financial and professional services firms to the media, tech and creative businesses clustered around Shoreditch and the wider East London tech scene, through to retail, hospitality and professional practices across the West End and beyond. Each of those sectors has a different relationship with connectivity — a City law firm moving large documents securely, a Shoreditch studio pushing video files to clients, or a West End retailer running cloud-based point-of-sale — but all of them share the same underlying requirement: connectivity that doesn't fail when it matters most.
Cloudswitched is based in the City of London, and we deliver leased line installations and ongoing management with genuine on-site coverage across London, backed by remote monitoring and support for the rest of the country.
A leased line rarely arrives in isolation — it usually sits alongside cloud email, VoIP and cloud backup, and we design the connection with those workloads in mind from day one, not as an afterthought once the circuit is live.
We size your leased line to what your business genuinely needs — factoring in cloud backup, VoIP call volumes and remote working — rather than pushing the largest circuit available.
Where uptime is business-critical, we can design failover options alongside your leased line, so a second connection picks up automatically if the primary circuit is ever affected.
From first enquiry to a live, monitored circuit — our process keeps things straightforward.
We assess your premises, existing infrastructure and bandwidth needs to establish what circuit size and delivery route make sense.
We provide a clear quote covering installation and ongoing costs, then place the order and manage the process with the carrier on your behalf.
Our engineers coordinate the physical install and configure routing and failover so the circuit is ready for production use.
Once live, your leased line is monitored 24/7, with our support team on hand backed by a 99% SLA guarantee.
We're based in the City of London ourselves, which means we understand the practical realities of getting a leased line into a shared office building, a converted period property, or a modern tower — and we manage the process rather than leaving you to deal with the carrier directly.
Because we also handle IT support, cloud networking, VoIP and cloud backup for many of our clients, we design your leased line around what actually runs across it, rather than treating connectivity as a separate conversation from the rest of your infrastructure.
Every connectivity engagement is backed by our 99% SLA guarantee and 24/7 monitoring, so if performance ever dips, we're already looking at it before you've had to raise a ticket.
We're upfront about cost and timescale from the site survey onward — leased line installation can take longer than broadband, and we'll tell you realistic lead times rather than optimistic ones that slip later.
If resilience matters to your business, we can also build in a failover connection, such as 4G or 5G business broadband, so a fault on the primary circuit doesn't mean a full outage while it's fixed.
We also help clients think through the wider implications of a leased line beyond raw speed. A dedicated circuit changes how confidently you can run video conferencing across the whole team at once, how quickly cloud backup jobs complete overnight, and how consistent VoIP call quality feels to clients on the other end of the line. For businesses planning a move to Azure cloud servers, or already running a hybrid setup between on-premise and cloud infrastructure, the leased line is often the piece that determines whether that migration feels smooth or constantly frustrating, and we factor that into the sizing conversation from the outset rather than treating it as a separate project later.
We manage connectivity as part of a bigger IT picture, not as a one-off sale.
Upload and download at the same consistent speed, whatever else is happening on the network.
A clear, measurable service standard covering your connectivity, not a vague best-effort assurance.
Continuous monitoring of circuit performance, so issues are caught before they interrupt your business.
Genuine on-site coverage across London, backed by a team who understand the local building and carrier landscape.
We size and configure your leased line around the cloud email, VoIP and backup workloads that actually run on it.
4G and 5G business broadband failover can be added for businesses that can't tolerate any downtime at all.
Connectivity, network admin and cloud services managed by the same team, so nobody can point the finger elsewhere.
We tell you realistic lead times for installation from the outset, rather than optimistic dates that slip.
Clear costs for installation and ongoing charges from the first site survey, with no hidden extras later.
We deliver and manage leased lines across the City of London, Canary Wharf, the West End and the wider capital, with genuine on-site coverage for installation and any hands-on network work. Whether you're a single-site business or operate across several London locations, the same principle applies: a dedicated, guaranteed circuit that performs the same whether it's a quiet Tuesday or your busiest day of the year.
A few situations come up again and again when London businesses first contact us about a leased line. Sometimes it's a specific incident — an internet outage during a client presentation, or a failed upload that delayed an important deadline. More often, it's a slow accumulation of small frustrations: video calls that occasionally freeze, cloud backups that never quite finish overnight, or a general sense that the office broadband was fine for five people and is now creaking under the weight of twenty. Growth is usually the underlying driver. A business that has added headcount, moved to more cloud-based tools, or started depending on VoIP for every call eventually reaches a point where contended, asymmetric broadband simply can't keep up, and a dedicated leased line becomes less of a luxury and more of an operational necessity.
Ask what the delivery lead time actually looks like for your specific building — some City and West End sites already have fibre nearby, while others need new ducting installed, which can significantly change the timescale.
SLA terms: look closely at what the service level agreement actually guarantees, not just the headline uptime figure — response times and fix times matter just as much as the percentage quoted.
Getting started: a free consultation and site survey is the right first step, so you know exactly what's achievable at your address before committing to a contract term.
Existing infrastructure: if you already run cloud email, VoIP or Azure cloud servers, tell us before the survey so the circuit is sized correctly from day one rather than needing an upgrade six months later.
Contract length: leased line contracts typically run longer than a standard broadband agreement, so it's worth understanding what happens if you relocate before the term ends, and whether the circuit can be moved or the contract adjusted without a heavy penalty.
Coverage
Guaranteed symmetrical speed, 24/7 monitoring and a 99% SLA guarantee, with genuine on-site coverage across London.
leased line london
Dedicated, symmetrical fibre connectivity for London businesses, installed and managed by a City of London-based team with genuine on-site coverage.
business connectivity solutions
Leased lines, broadband and failover connectivity designed around the cloud systems your business actually depends on, backed by 24/7 monitoring.
Got questions about getting a leased line in London? We've answered the most common ones below. If you need more detail, get in touch.
A leased line is a dedicated fibre circuit running directly to your premises, giving you guaranteed, symmetrical, uncontended bandwidth. Standard broadband is shared with other users on the same local infrastructure, so speed can vary depending on demand.
It varies by building and location — some City and West End sites already have nearby fibre infrastructure, which can shorten the process, while others need new ducting installed, which takes longer. A site survey gives you a realistic timescale upfront.
Yes, 4G and 5G business broadband is available, and works well either as a standalone connection for smaller sites or as an automatic failover alongside a leased line for businesses that need extra resilience.
Yes, Cloudswitched is based in the City of London, and we provide genuine on-site coverage for leased line installations and network support across the capital, alongside remote monitoring and support UK-wide.
We back our connectivity work with a 99% SLA guarantee and 24/7 monitoring, so performance issues are identified and acted on quickly rather than left for you to notice and report.
Yes, connectivity sits alongside our IT support, network admin, cloud networking and cloud backup services, so one team understands your whole environment rather than treating the internet connection in isolation.
It depends on how dependent the business is on cloud services, VoIP and remote working. If broadband is already causing real disruption, a leased line often pays for itself in reduced downtime and productivity lost to a poor connection.
A leased line is tied to a specific address, so moving offices means arranging a new circuit at the new premises. We can plan this alongside an office move so connectivity is ready before moving day.
Limited time offer — valid until 31/05/2026
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