Best UK Leased Line Providers 2026 | Compare Prices, SLAs & Quotes Quick Answer
The best leased line provider in the UK depends on your postcode, required speed, installation route, SLA needs, budget and whether you need managed networking or resilience.
For many UK businesses, the main leased line providers to compare include:
BT Business / BTnet
Virgin Media Business
TalkTalk Business
Daisy Communications
Zen Internet
Colt
Vodafone Business
Spitfire
Focus Group
local fibre and connectivity specialists
Typical leased line prices in 2026 range from around £150-£2,000+ per month, depending on speed, location, provider, contract length and installation complexity.
Leased line speed Typical monthly cost Best for
100Mbps leased line
£150-£300+
SMEs, VoIP, cloud apps and reliable uploads
500Mbps leased line
£250-£600+
Growing offices, multi-user cloud systems and video calls
1Gbps leased line
£300-£800+
Larger teams, heavy uploads and high-demand sites
10Gbps leased line
£1,000-£2,000+
Enterprise, data-heavy and mission-critical sites
The cheapest leased line provider is not always the best choice. Businesses should compare speed, upload performance, SLA, fix time, installation costs, ECC risk, wayleaves, router management, resilience and total contract cost before signing.
Compare leased line provider quotes →
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Transparent, impartial, and data‑driven reviews made by a team of expert humans, never AI generated – here’s exactly how Compare Your Business Costs helps you find the best deals from trusted UK providers: click here
Authored by: Ally Cox (Business Technology & B2B Services Specialist 10+ Years’ Experience)
Reviewed by: James Ward (Telecoms Specialist, 12+ Years Experience)
Last Updated: May 2026
Key Takeaways
Leased lines give businesses a dedicated, symmetrical internet connection, unlike standard shared broadband.
Typical UK leased line pricing starts from around £150-£300+ per month for lower-speed circuits.
Virgin Media Business says its DIA leased line packages start from £185 per month for 100Mbps upload and download speeds.
BTnet offers a dedicated leased line with a 100% availability SLA and 5-hour target fix time.
TalkTalk Business says its leased line/DIA services include built-in resilience and 4-hour fix SLAs.
Installation usually takes longer than standard business broadband and can involve surveys, wayleaves and excess construction charges.
The cheapest monthly quote can become expensive if ECCs, router costs, resilience or support are not included.
100Mbps, 500Mbps and 1Gbps leased lines are the most common comparison points for SMEs.
A leased line is usually best for businesses where downtime, slow upload speeds or unreliable broadband would cause real operational or revenue problems.
Businesses with lighter needs should compare full fibre business broadband before paying for a leased line.
The Largest Leased Line Providers in the UK
Contents:
Best Leased Line Providers UK 2026
Top 3 Recommended Providers
What to Look For in a Leased Line Provider
Leased Line Providers Compared by Features
How to Choose the Right Provider
Best Leased Line Providers UK 2026
Provider Best for Not ideal for What to check
BT Businesses wanting major-provider scale, strong SLA and UK-wide coverage
Buyers focused only on the lowest monthly price
SLA terms, installation cost, router choice and contract length
Virgin Media Business Businesses in Virgin coverage areas wanting DIA and high-speed connectivity
Premises outside Virgin’s network
Availability, installation route, pricing and annual increases
TalkTalk Business SMEs wanting competitive DIA pricing and business continuity features
Businesses wanting a premium managed IT wraparound
Fix SLA, router management, installation and support
Daisy SMEs and multi-site businesses wanting managed connectivity support
Businesses wanting direct-only supplier relationships
Contract terms, support model and managed services
Zen Internet SMEs prioritising service, reliability and leased line SLAs
Buyers wanting cheapest headline price
Availability, resilience options and support level
Colt Larger businesses, enterprise networks and major urban sites
Small businesses with basic connectivity needs
Coverage, managed networking and contract scope
Vodafone Businesses wanting connectivity plus mobile-network resilience
Firms needing only fixed-line dedicated internet
Backup, mobile integration and SLA terms
Spitfire Tech-led SMEs and businesses wanting engineering-led support
Very low-cost buyers
Coverage, support model and installation terms
Focus Group SMEs wanting telecoms, connectivity and managed service options
Buyers wanting a simple standalone leased line only
Bundled services and contract scope
Local fibre specialists
Sites in strong local network areas
Multi-site businesses needing national consistency
Coverage, SLA, install route and support quality
Leased line provider comparison table
Provider Typical leased line positioning SLA / reliability angle
BTnet
Dedicated leased line with major UK network scale
100% availability SLA and 5-hour target fix time
SMEs and larger businesses wanting established provider support
Virgin Media Business DIA
Dedicated Internet Access with symmetrical speeds
Dedicated connection with packages from 100Mbps
Businesses in Virgin areas needing speed and dedicated access
TalkTalk Business DIA
Dedicated internet with resilience and Meraki-style management options
Built-in resilience and 4-hour fix SLA messaging
SMEs wanting competitive leased line pricing
Zen Ethernet
Dedicated symmetrical bandwidth and leased line options
99.9% SLA, adjustable up to 100% with resilience
SMEs prioritising reliability and support
Colt
Enterprise-grade fibre and network services
Strong enterprise network performance
Larger, multi-site and international businesses
Daisy
Managed connectivity and business telecoms
Business continuity and support-led proposition
SMEs and multi-site businesses
Vodafone Business
Fixed connectivity plus mobile-network strength
Useful for failover and resilience planning
Businesses wanting fixed and mobile connectivity together
Spitfire
Engineering-led connectivity provider
Strong technical support positioning
SMEs with technical or voice/connectivity needs
Leased line prices by provider type Leased line prices vary heavily because providers need to check your premises, fibre route, distance from network infrastructure, speed requirement and installation complexity.
Provider type Typical monthly cost Best for Watch out f or
Major national provider
£180-£800+
Businesses wanting scale and strong SLA
Competitive business ISP
£150-£600+
SMEs comparing price and reliability
Check SLA and router support
Managed connectivity provider
£200-£900+
Businesses wanting support, routers and managed services
Bundles may increase cost
Enterprise network provider
£300-£2,000+
Large, multi-site or data-heavy businesses
Local fibre provider
£150-£500+
Businesses in strong local coverage areas
10Gbps leased line provider
£1,000-£2,000+
Enterprise and high-capacity sites
Installation and hardware costs
Compare leased line prices for your postcode →
Best leased line provider by business need
Your priority Best provider type Why
Lowest monthly price
Competitive DIA provider or broker comparison
Pricing varies heavily by location
Best SLA
BTnet, Zen, Colt or specialist leased line providers
Stronger SLA and fix-time commitments
Best for SMEs
TalkTalk Business, Daisy, Zen, Spitfire or BT
Balance of price, support and reliability
Best for large enterprises
Colt, BT, Vodafone or Virgin Media Business
Stronger network and enterprise service options
Best for VoIP-heavy businesses
Provider with low latency, SLA and managed router
Call quality depends on consistency
Best for cloud software
100Mbps–1Gbps symmetrical leased line
Upload and download performance both matter
Best for multi-site businesses
Managed connectivity provider
Easier central management and support
Best for uptime
Leased line with resilience or backup circuit
Reduces single point of failure
Best for fast installation
Provider already close to your premises
Fibre route and survey affect timescales
Best for technical support
Engineering-led provider or managed service provider
Useful for complex networks
Top 3 Recommended Providers (2026) 1. Focus are the Best Overall Leased Line Provider
Focus are our number one, as they offer UK-wide availability, excellent uptime, competitive pricing and strong customer support. We think they are great for SMEs and multi-site teams.
2. TalkTalk Business are the Best for Small Businesses
We like TalkTalk as they offer their customers with reliable speeds, quick installations and competitive pricing, making thema great fit for organisations moving to cloud apps and VoIP.
3. BT are Best for Reliability
BT provides one of the most stable networks in the UK, with excellent SLAs and nationwide coverage.
What to Look For in a Leased Line Provider
Factor Why it matters
Postcode availability
Provider pricing and speed depend on your exact location
Speed
100Mbps, 500Mbps, 1Gbps and 10Gbps have very different costs
Symmetrical bandwidth
Upload and download speeds should match
SLA
Shows the provider’s service commitment
Fix time
Important if downtime affects revenue
Installation time
Leased lines often take weeks or months
ECCs
Excess construction charges can materially increase cost
Wayleaves
Landlord or building permissions can delay installation
Router
Managed vs unmanaged router affects support and control
Resilience
Backup circuit, 4G/5G failover or diverse routing may be needed
Contract length
36-month contracts are common
Price increases
Check annual increases and contract terms
Support model
Direct support, reseller support or managed service support
Service credits
Check what happens if the SLA is missed
Leased Line Providers Compared by Features
Feature Daisy TalkTalk BT Virgin Zen
SLA
100%
99.95%
100%
99.95%
100%
Fix Time
5 hrs
7 hrs
6 hrs
6 hrs
5 hrs
Free Install
Sometimes
Often
Often
Often
Often
Speeds
100Mb–10Gb
100Mb–1Gb
100Mb–10Gb
100Mb–10Gb
100Mb–1Gb
Great For
SMEs
Price
Reliability
Speed
Support
Leased line SLAs and fix times explained A leased line SLA is one of the main reasons businesses pay more than standard broadband.
SLA term What it means Why it matters
Availability SLA
Provider target for uptime
Helps protect critical connectivity
Fix time
Target time to restore service after a fault
Reduces downtime risk
Latency SLA
Commitment around network delay
Important for VoIP and real-time apps
Packet loss SLA
Commitment around dropped data
Important for voice, video and cloud systems
Service credits
Compensation if SLA is missed
Helps hold provider accountable
Resilience option
Backup or secondary circuit
Reduces single point of failure
Leased line installation: what providers check Leased line installation is more involved than business broadband installation because it may require new fibre or dedicated routing to your premises.
What happens Common delay
Availability check
Provider checks network access near your premises
Quote
Provider estimates monthly and install costs
Need for survey
Survey
Engineer reviews route and building access
Wayleave
Landlord or building owner permission
ECC review
Excess construction charges identified
Distance, ducts or civils
Installation
Fibre circuit and equipment installed
Roadworks or access issues
Testing
Circuit is tested before handover
Go-live
Service goes live with router/firewall
ECCs: excess construction charges ECCs are one of the biggest leased line cost risks.
ECC issue Why it matters
No nearby fibre route
Provider may need to build more infrastructure
Blocked ducts
Civil engineering work may be needed
Long private driveway or estate
Additional cabling may be charged
Listed or managed building
Permissions can delay work
Roadworks
Can increase time and cost
Landlord permission
Rural location
Build costs may be higher
Our tip:
Managed vs unmanaged leased lines
Option Best for Pros Cons
Managed leased line
Businesses wanting provider support
Provider manages router and support
Less control, higher cost
Unmanaged leased line
Businesses with internal IT or MSP
More control over firewall/router
Requires technical knowledge
Leased line with managed firewall
Security-conscious businesses
Connectivity and security together
Leased line with SD-WAN
Multi-site businesses
Centralised network management
A leased line provider should explain whether the router is managed, whether you can use your own firewall, and who is responsible for configuration and troubleshooting.
Leased line vs business broadband provider
Option Typical monthly cost Best for Main limitation
Business broadband
£20-£100+
Small businesses and standard office use
Full fibre business broadband
£30-£100+
SMEs using cloud tools and VoIP
Broadband with 4G/5G backup
£45-£120+
Shops, cafés and small offices needing low-cost resilience
Backup depends on mobile signal
Leased line
£150-£2,000+
Critical, multi-user or upload-heavy businesses
Higher cost and longer install
Leased line with resilience
Quote required
Businesses that cannot tolerate outages
Higher total cost
Leased line providers by speed
Speed Best for
100Mbps
SMEs, VoIP, cloud apps and reliable uploads
Compare BT, Virgin, TalkTalk, Zen, Daisy and local providers
500Mbps
Growing offices, heavier cloud use and video calls
Check upgrade paths and router capacity
1Gbps
Large teams, agencies, SaaS-heavy companies and multi-site access
Compare SLA, latency and install costs carefully
10Gbps
Enterprise, data centres, media, finance and large campuses
Compare Colt, BT, Virgin, Vodafone and specialist providers
How to Choose the Right Provider WE think that the best provider depends on (in no particular order!):
Your location (urban vs rural)
Your required speed
Your budget
Whether you need managed networking (SD-WAN, firewalls)
How important uptime is to your operations
Leased line provider decision table
Your priority Best option
Cheapest leased line
Compare TalkTalk, Daisy, local fibre and broker quotes
Best national provider
BTnet, Virgin Media Business or Vodafone
Best for SMEs
Daisy, Zen, TalkTalk, Spitfire or BT
Best for enterprise
Colt, BT, Vodafone or Virgin Media Business
Best SLA
Provider with 100% availability or resilient circuit
Best fix time
Provider offering 4–5 hour target fix
Best for VoIP
Managed leased line with QoS support
Best for cloud backups
Symmetrical 500Mbps or 1Gbps leased line
Best for multi-site
Managed connectivity or SD-WAN provider
Best for avoiding ECC surprises
Compare providers with nearby network access
Best overall route
Compare quotes by postcode, SLA and installation terms
Why compare leased line providers with Compare Your Business Costs? Compare Your Business Costs helps UK businesses compare leased line providers without contacting every supplier individually.
We can help you compare:
UK leased line providers
100Mbps, 500Mbps, 1Gbps and 10Gbps leased lines
BTnet leased lines
Virgin Media Business DIA
TalkTalk Business leased lines
Daisy leased lines
Zen leased lines
Colt leased lines
Vodafone leased lines
managed and unmanaged leased lines
SLA and fix-time options
installation costs and ECC risks
leased line vs business broadband alternatives
Compare leased line provider quotes →
Why trust our reviews? Our leased line guides are written to help UK businesses make practical buying decisions, not just compare headline speeds.
We focus on:
realistic UK 2026 leased line pricing
postcode-led availability
100Mbps, 500Mbps, 1Gbps and 10Gbps circuits
SLAs, fix times and service credits
installation times, wayleaves and ECCs
managed routers, resilience and failover
leased line vs business broadband comparison
provider comparison based on practical business fit
quote-led guidance for businesses that need reliable connectivity
Our verdict The best leased line provider is not always the provider with the lowest headline monthly price. For leased lines, the real buying decision depends on postcode availability, SLA, fix time, ECC risk, installation timescale, router management, resilience and total contract cost.
BTnet is a strong choice for businesses wanting major-provider scale and a 100% availability SLA. Virgin Media Business is worth comparing where its DIA network is available and symmetrical dedicated connectivity is required. TalkTalk Business can be competitive for SMEs and highlights 4-hour fix SLA messaging. Zen, Daisy, Colt, Vodafone, Spitfire and local providers may all be better depending on location, support needs and contract structure.
The safest approach is to compare multiple leased line providers by postcode before signing a long contract.
Compare leased line providers and save up to 40% →
FAQs Who are the best leased line providers in the UK?
The best leased line providers in the UK include BT Business, Virgin Media Business, TalkTalk Business, Daisy, Zen, Colt, Vodafone, Spitfire, Focus Group and local fibre specialists. The best provider depends on postcode availability, speed, SLA, fix time, installation cost and support needs.
How much does a leased line cost in the UK?
A leased line usually costs around £150-£2,000+ per month in the UK. A 100Mbps leased line may cost around £150–£300+ per month, while 1Gbps and 10Gbps circuits cost more. Virgin Media Business says its DIA packages start from £185 per month for 100Mbps upload and download.
Which leased line provider is cheapest?
The cheapest leased line provider varies by postcode and installation route. TalkTalk Business, Daisy, local fibre providers and broker-led comparisons can be competitive for SMEs, but the cheapest monthly price may not include the best SLA, router, support or installation terms.
Which leased line provider has the best SLA?
BTnet advertises a 100% availability SLA and 5-hour target fix time. Zen says leased lines come with 99.9% availability as standard, adjustable up to 100% with additional resilience.
What is a leased line SLA?
A leased line SLA is the provider’s service level agreement covering uptime, fix times, latency, installation and service credits. It explains what the provider commits to and what happens if the service falls short.
How long does leased line installation take?
Leased line installation often takes 45-90+ days, depending on survey results, wayleaves, fibre availability, civil works and excess construction requirements. Complex sites can take longer.
What are ECCs on a leased line?
ECCs are excess construction charges. They may apply if additional work is needed to connect your premises, such as new ducting, fibre routing, roadworks or complex building access.
Do leased line providers offer free installation?
Some providers advertise free installation or waive setup fees on certain contracts, but ECCs may still apply after survey. Always ask whether installation is fully included or subject to excess construction charges.
Is BT a good leased line provider?
BTnet can be a strong leased line option for businesses wanting a major UK provider, dedicated connection, 100% availability SLA and 5-hour target fix time.
Is Virgin Media Business good for leased lines?
Virgin Media Business can be a good option where its Dedicated Internet Access network is available. It says DIA packages start from £185 per month for 100Mbps upload and download.
Is TalkTalk Business good for leased lines?
TalkTalk Business can be worth comparing for SMEs. Its leased line page highlights dedicated internet access, business continuity, built-in resilience and 4-hour fix SLA messaging.
Is Zen good for leased lines?
Zen is worth comparing for SMEs that prioritise reliability and support. Zen says leased lines provide dedicated, symmetrical bandwidth and that availability can be increased from 99.9% to 100% with additional resilience.
Is a leased line better than business broadband?
A leased line is better if your business needs dedicated bandwidth, symmetrical upload/download speeds, stronger SLA and more consistent performance. Business broadband is cheaper and usually enough for smaller businesses with lighter usage.
What speed leased line do I need?
Many SMEs start with 100Mbps or 500Mbps. Larger offices, data-heavy businesses and teams using hosted desktops, VoIP, cloud backups or large file transfers may need 1Gbps or more.
Should I compare leased line providers before signing?
Yes. Leased line pricing and installation risk vary heavily by postcode. Comparing providers helps you find better pricing, avoid unnecessary ECCs, improve SLA terms and choose the right contract.
Compare leased line prices for your postcode
Our Leased Line Panel of Experts
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Hi, I’m Ally Cox , a senior copywriter and blogger at CompareYourBusinessCosts.co.uk, the UK’s trusted platform for comparing business services.over a decade of experience in the B2B sector, I specialise in simplifying complex topics like leased lines, VoIP, business energy, HR and payroll solutions, accounting software, and EPOS systems .HR, copywriting, and business operations- from clocking-in systems to card machines and office technology .informed, confident decisions when choosing products and services that improve efficiency and save money.