Compare UK Business Connectivity: Broadband, Leased Lines, SD-WAN and Managed Networks

Comparify is an independent comparison resource for UK businesses evaluating connectivity and managed network options. We publish research on broadband, leased lines, SD-WAN, SASE and cloud voice so you can make procurement decisions based on facts rather than sales pitches.

• Side-by-side comparison data across SOGEA, FTTP, leased lines, SD-WAN and managed security options
• Technical explainers written for IT managers and operations directors (not marketing departments)
• Option to speak with a UK connectivity specialist when you are ready to progress

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What Does Comparify Do?

Comparify publishes independent research and comparison data on UK business connectivity. The site covers broadband (SOGEA and FTTP), Ethernet leased lines, SD-WAN overlays, SASE security frameworks and hosted voice platforms. Each comparison is structured around the criteria that matter during procurement: SLA commitments, symmetric vs asymmetric bandwidth, resilience options, installation lead times and total cost of ownership. The aim is to give IT decision-makers a factual basis for shortlisting products before engaging a provider. If you want to take the next step, Comparify can introduce you to a vetted UK connectivity specialist.

Business Connectivity at a Glance: How the Main Options Compare

Choosing the right connectivity product depends on your reliability requirements, bandwidth needs, budget and timeline. The table below summarises the four most common options for UK businesses with 10 to 250 employees.

	SOGEA Broadband	FTTP (Full Fibre)	Ethernet Leased Line	SD-WAN over Internet
Typical use case	Small office, light cloud usage, email and web browsing	Growing office, moderate cloud usage, VoIP, video conferencing	Mission-critical applications, symmetric upload/download, SLA-dependent workloads	Multi-site businesses needing centralised policy, failover and traffic prioritisation
Reliability / SLA	No SLA. Best-effort service with contended bandwidth	No formal SLA on most residential-grade FTTP. Business FTTP variants may include a care level	Guaranteed SLA (typically 99.9%+). Defined fix times (5-hour or next-business-day)	Depends on underlay circuits. SD-WAN adds resilience through bonding and failover but cannot exceed the SLA of its underlying connections
Typical install lead time	1 to 2 weeks	2 to 6 weeks (longer if Openreach build required)	45 to 90 working days (wayleave and fibre build dependent)	2 to 4 weeks for overlay configuration once underlay circuits are live
Indicative cost	£	£	£££	££ (plus underlay circuit costs)

This is a simplified comparison. Your specific requirements around uptime, symmetric bandwidth, site count, security and manageability will determine which option (or combination) is appropriate. Our Learning Centre covers each product category in detail.

Do I Need a Leased Line or Will Fibre Broadband Do the Job?

For most UK businesses with a single site and fewer than 30 users, FTTP broadband provides adequate bandwidth at a fraction of the cost of a leased line. The key trade-off is reliability. Broadband services (SOGEA and FTTP) are contended and carry no fix-time SLA. A leased line delivers a guaranteed symmetric connection with contractual uptime commitments and defined repair windows. If your business depends on constant connectivity for cloud-hosted applications, VoIP, EPOS or remote-access systems, the cost of a leased line is typically justified by the reduction in downtime risk. Businesses running hybrid setups often pair FTTP with a secondary connection for resilience rather than paying for a full leased line.

What Is SD-WAN and When Is It Worth Considering?

SD-WAN (Software-Defined Wide Area Network) is an overlay technology that sits on top of your existing internet connections and applies intelligent traffic routing, failover and centralised policy management. It is most relevant for businesses with two or more sites that need consistent application performance across locations. SD-WAN can bond multiple cheaper broadband circuits to approximate leased-line reliability at lower cost. It also enables granular control over which applications get priority bandwidth. For single-site businesses, SD-WAN rarely makes financial sense unless you need automatic failover between two connections. For multi-site organisations, it often reduces WAN costs by 30 to 50% compared with MPLS while improving visibility and control.

What About Security? SASE, Managed Firewalls and Secure Access

Network security is now inseparable from connectivity procurement. SASE (Secure Access Service Edge) combines SD-WAN with cloud-delivered security functions including firewall-as-a-service, zero-trust network access, secure web gateway and CASB. For businesses moving workloads to the cloud and supporting remote workers, SASE provides a unified framework that replaces the traditional perimeter firewall model. Managed firewall and managed security services are available as standalone additions to any connectivity product. The decision between standalone security add-ons and a full SASE framework depends on your site count, remote workforce size, compliance requirements and internal IT capacity. Our Learning Centre includes detailed comparisons.

How We Help You Choose

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Our Comparison Methodology

Every comparison on Comparify is structured around eight criteria: SLA and reliability commitments, capacity and bandwidth symmetry, resilience and redundancy options, security requirements, manageability and monitoring, site count and topology, budget constraints, and installation timeline. These criteria reflect the factors that most often determine whether a connectivity product is fit for purpose in a real business environment. We weight each criterion based on the use case being evaluated rather than applying a single ranking model. Full details of our methodology are published on our dedicated methodology page.

Frequently Asked Questions

Do I need a leased line?

You need a leased line if your business cannot tolerate unplanned downtime or variable upload speeds. Leased lines provide a guaranteed symmetric connection with contractual SLA and fix-time commitments. If you run VoIP, cloud-hosted ERP, EPOS or remote desktop services, a leased line removes the risk of contention-related performance drops. If your usage is primarily email and web browsing with no critical uptime requirement, broadband is likely sufficient.

What is the difference between FTTP and a leased line?

FTTP (Fibre to the Premises) is a shared, contended broadband service delivered over fibre. Speeds are typically asymmetric (faster download than upload) and there is no guaranteed fix time if the service fails. A leased line is a dedicated, uncontended fibre circuit with symmetric speeds and a contractual SLA. FTTP costs £20 to £60 per month. A leased line costs £200 to £500 per month depending on bandwidth and location. The performance gap is most noticeable on upload-heavy tasks and during peak hours.

What is SD-WAN and when is it worth it?

SD-WAN is a software layer that manages traffic across multiple internet connections. It adds intelligent routing, automatic failover and centralised policy control. It is worth considering if you have two or more sites, need application-level traffic prioritisation, or want to bond cheaper broadband circuits for resilience. For single-site businesses it is rarely cost-effective unless you specifically need automatic failover.

What does “managed” mean in managed connectivity?

A managed service means the provider handles monitoring, maintenance, configuration changes and fault resolution on your behalf. You get an SLA for response times and a portal or dashboard for visibility. An unmanaged service gives you the raw connection and leaves configuration and troubleshooting to your own IT team. Managed services cost more but reduce the internal resource burden.

How long does a leased line take to install?

Typical installation is 45 to 90 working days from order. The main variables are whether Openreach needs to build new fibre to your premises (a “new provide”) and whether wayleave permissions are needed from landlords or local authorities. Some providers offer expedited installs in areas with existing fibre infrastructure. Always confirm the estimated delivery date in writing before signing a contract.

Can I use broadband for VoIP?

Yes, but with caveats. VoIP requires consistent low-latency bandwidth. On a contended broadband connection, call quality may degrade during peak usage periods. If you have fewer than 10 concurrent calls and a reasonably stable FTTP connection, broadband is usually acceptable. For larger deployments or where call quality is business-critical, a leased line or SD-WAN with QoS policies is the more reliable option.

What is SASE and do I need it?

SASE (Secure Access Service Edge) is a cloud-delivered framework that combines SD-WAN with network security functions (firewall, zero-trust access, secure web gateway). You should evaluate SASE if you have multiple sites, remote workers accessing cloud applications, or compliance requirements that demand consistent security policy enforcement across all access points. For single-site businesses with a simple network, a standalone managed firewall is usually sufficient.

Is Comparify free to use?

Yes. All research, comparison data and guides on Comparify are free to access. If you choose to speak with a connectivity specialist through us, there is no charge to you. Comparify is funded through partnerships with approved UK connectivity providers.

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Reviewed by Robert Sturt, Managing Director | Last updated: March 2026