Leased lines for London businesses
Take your business to the next level with a leased line
Leased lines are dedicated fibre internet connections, delivering several key business advantages over standard full-fibre broadband.
Dedicated bandwidth
Reserved capacity for your business, not a best-effort connection shared with your neighbours
Secure & private
For sensitive systems and data, with private connectivity that can bypass the public Internet.
Business-grade support
Designed, monitored and supported by engineers rather than pushed through a call centre script.
What are the benefits of a leased line?
A leased line's main benefit is predictable performance. If your business depends on the Internet all day, every day, a dedicated leased line brings a number benefits over full fibre broadband.
If you need complete assurance that your connection won't let you down at the worst possible time, whether that's for calls, payments, cloud tools, or backups, a leased line can give you that peace of mind.
Beyond the fact that it's a dedicated line, not shared with neigbours, a leased line brings many other benefits:
Low latency
Leased lines are lower latency, and low jitter, ensuring no more drop-outs during voice or video calls, or while using cloud apps.
Privacy
Carry private traffic between your branches, data centres, and cloud on-ramps, all without using the public Internet.
Resiliency
With intelligent routing, and intelligent automatic failover, diverse leased lines provide the ultimate in reliability.
Reach
Whether your business is remote or in a difficult-to-access location, leased lines can get to places broadband can't.
What type of businesses use a leased line?
Leased lines are popular with all kinds of businesses, from law firms and agencies to financial services firms and retailers. Wherever a dropped connection costs real money, whether that's a missed deadline, a lost sale, or an unhappy client, it's worth a look.
They're also the natural next step for a growing business, the point where a single broadband line starts to feel like a bottleneck rather than a convenience. See if any of this sounds familiar:
A leased line in London might be right for you if you:
- rely heavily on cloud platforms such as Microsoft 365, Google Workspace, CRMs or hosted apps
- use VoIP or video calls throughout the working day
- move large files or run regular off-site backups
- connect multiple offices, data centres or cloud environments
- need predictable latency and low jitter
- cannot afford long outages or vague repair times
- want to privately network branches together, or connect to cloud storage, bypassing the Internet
How does a leased line compare to full-fibre broadband?
Both run over fibre, but they're built for different jobs. Broadband is a shared, best-effort service: contended with your neighbours, with performance that can dip at peak times and no real guarantee of a fast fix if something goes wrong.
A leased line is dedicated entirely to your business. It's uncontended, symmetric, and backed by a proper SLA with defined repair targets, so performance stays consistent whether it's 9am or 9pm.
The main trade-off is cost: a leased line is a dedicated build for your business, so it costs more than broadband. For most businesses that depend on their connection, the reliability and control it brings are worth that investment.
| Broadband | Leased Lines | |
|---|---|---|
| Contention | Line shared with neighbours | Dedicated line, just for you |
| Peak-time speed | Can slow down | Consistent, 24/7 |
| Speed type | Usually asymmetric* | Symmetric |
| Reliability | Variable | High & consistent |
| Guaranteed SLA | No | Yes |
| Repair targets | Best effort | 6-hour |
| Scalable for growth | Limited | Yes |
| Cost | Lower | Higher |
| Installation time | Mixed | Mixed |
| Suitable for | Light business use | Medium/heavy use |
*Symmetric means matching upload and download speeds. Symmetric broadband is coming soon, but at extra cost and still without all the other benefits of a leased line.
What is contention, and why does it matter?
Full fibre broadband is capable of great speeds, but it's still a contended service, meaning that it's shared with other local businesses (and local residents, if the network isn't exclusively business-only).
Many ISPs, particularly residential ones, heavily oversubscribe broadband capacity, on the assumption that not everyone will use the full speed at the same time. However, this can lead to noticeable slowdowns during peak times, such as at mid-afternoon when neighbouring children get home from school and start gaming or video streaming.
You may not even notice this as first, but as more and more subscribers are added onto the same line, the situation can get worse over time.
A leased line is yours and yours alone.
Get a leased line quote
How much does a leased line cost?
Unlike broadband, leased lines are flexible, and delivered how and where you want it, even to weird locations
Automated tools can give an cost estimate, but final quoted pricing, which should be done manually to take all factors into consideration, can vary significantly. As a rough guide though, for a typical 1Gbps leased line, you can expect to pay in the region of £250-£350 per month.
Give us a few details for an exact price
Factors that affect leased line pricing
- Location - How far are you from our fibre network?
- Cable routing - On the ground floor or 20 storeys up?
- Bandwidth - How quickly do you need to transfer data?
- Resilience - Do you need a diverse backup line?
- Contract - What minimum term can you commit to?
How are our leased lines are different?
Support you'll actually love
An expert London-based team that knows you by name, and your entire setup.
24/7 monitoring
Monitoring your systems and ours, and taking immediate action
Built for business
Our network is optimised for businesses with redundancy built-in throughout
Your choice of router
Use our enterprise gear or your own OpenWrt build. Your network, your rules.
Total peace of mind
We can even install and look after your entire network, end-to-end.
A personal service
You'll be known to our team by name, not passed around as a ticket number.
No hard-sell
We give our clients genuine advice, and don't just sell for the sake of it.
No technobabble
We speak geek when we need to, but we're also fluent in plain English when it matters
No nonsense
No hidden fees, no fair-use policy, no confusing contracts, no nasty surprises.
Managed By EnlinkTM
For businesses that want the ultimate level of protection and total peace of mind, our Managed By EnlinkTM service brings even more benefits:
24x7, 365 support
A direct line to our local, London-based engineers, any time day or night. No more waiting for Monday morning to come around.
Director-level escalation
If the situation requires it, you'll have the option to escalate an urgent issue to the highest level. We're confident you'll never need to, but the option is always there.
Proactive monitoring
We monitor your network and connection 24 hours a day, taking early action where possible to prevent issues before they become problems.
WiFi & full LAN management
We can look after your entire network end-to-end. From configuring and optimising your firewall and other network equipment, to securing your devices and WiFi.
Check leased line availability for your London business
Tell us a little about your business and where you're based, and we'll check what's possible for you, then reply with our best pricing and options.
Prefer to talk? Call 020 3929 4499
Frequently Asked Questions
Everything you need to know about leased lines in London, from cost and speed to installation and resilience. Can't find your answer? Get in touch.
How long does a leased line take to install?
Installation times vary depending on whether fibre is already nearby, whether wayleaves are needed, and how much external work is required. We will explain the expected lead time before you commit.
What leased line speeds are available?
Leased lines are available at a range of speeds, commonly from 100 Mbps to 10 Gbps or more, depending on your location and requirements.
Can a leased line improve VoIP and video calls?
Yes. VoIP and video calls are sensitive to latency, jitter, and packet loss. A leased line provides a more stable connection, helping to reduce dropouts, delays, and freezing.
Can a leased line be used for private connections?
Yes. A leased line can connect your business to the Internet, but it can also be used for private links between offices, data centres, cloud platforms, or other business sites.
Do leased lines come with an SLA?
Yes. Leased lines usually come with a stronger service level agreement than broadband, including clearer repair targets and support commitments.
What happens if my leased line goes down?
A single leased line is highly reliable, but no physical connection is immune from damage or faults. For businesses that cannot afford downtime, we can provide resilient connectivity using diverse circuits, separate carrier paths, automatic failover, and even 4G or 5G backup options.
Can I use my own router or firewall?
Absolutely. You can use your own router, firewall, or OpenWrt setup if you prefer. We can also provide and manage enterprise-grade equipment as part of a fully managed service.
Is a leased line more secure than broadband?
A leased line gives you a more controlled and predictable connection, and can be used for private connectivity that avoids the public Internet. It does not replace firewalls or good security practices, but it can provide a stronger foundation for protecting sensitive systems and data.
Can you manage the whole network for us?
Yes. We can provide the leased line, router, firewall, switching, WiFi, and ongoing monitoring as a managed service, giving you one team responsible for the connection and the network behind it.
Who is Enlink Networks?
Enlink Networks is a London-based business ISP, delivering and supporting the leased lines and connectivity behind this site. We design, install, and manage dedicated fibre connections and networks for businesses, alongside a variety of data centre services.