Leased Line Costs Explained 2026 | Hidden Fees, Installation & ROI Quick Answer
A UK business leased line usually costs around £150-£800+ per month for most SMEs, depending on speed, postcode, installation route, contract length, SLA and provider availability.
Competitive leased line quotes may start from around £150-£300/month for 100Mbps, while 1Gbps leased lines often cost around £300-£800/month. Enterprise, resilient or 10Gbps circuits can cost significantly more.
Leased line cost Typical UK price
100Mbps leased line
£150-£300+ per month
500Mbps leased line
£250-£600+ per month
1Gbps leased line
£300-£800+ per month
10Gbps leased line
£1,000-£2,000+ per month
Standard installation
£0-£1,000+
Complex installation / ECCs
£1,000-£10,000+
Managed router / firewall
Included or £10-£150+ per month
4G/5G or FTTP failover
£10-£100+ per month
The real cost is not just the monthly rental. Businesses should also compare excess construction charges, wayleave delays, managed router costs, SLA terms, failover options, early termination fees and total contract cost.
A leased line can deliver strong ROI if your business relies on VoIP, cloud systems, hosted desktops, large uploads, customer bookings, online payments or always-on connectivity.
Compare leased line quotes for your postcode →
Contents:
Leased Line Costs Explained
Hidden Costs
Leased Line Installation Explained
Is a Leased Line Worth the Cost?
ROI Example
How do we work?
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: June 2026
Key Takeaways
Leased lines usually cost £150–£800+ per month for most SMEs, with enterprise circuits costing more.
The cheapest-looking quote is not always the best deal once installation, ECCs, routers, resilience and contract terms are included.
Virgin Media Business says its Dedicated Internet Access packages start from £185/month for 100Mbps upload and download.
BTnet advertises a 100% availability SLA and 5-hour target fix time, which shows why leased lines are often bought for reliability rather than speed alone.
Zen says its leased lines include 99.9% uptime as standard, with 100% available with resilience.
Installation usually takes 45–90 days, but wayleaves, surveys and civil works can extend this.
ECCs can add thousands if new fibre, ducting, civils or permissions are needed.
The ROI is strongest when downtime, slow uploads or poor VoIP quality have a measurable business cost.
For light usage, full fibre business broadband may offer enough performance at a lower monthly price.
Comparing postcode-level quotes is the safest way to understand the real cost before signing.
Leased Line Costs Explained Leased line pricing has become more competitive, especially in areas with strong fibre coverage, alt-nets or several providers nearby. However, national price averages can be misleading because leased line costs are highly location-dependent.
Speed Typical monthly cost Best for Watch out for
100Mbps
£150-£300+
SMEs using VoIP, cloud apps and video calls
May be limiting for heavy uploads
500Mbps
£250-£600+
Growing teams and heavier cloud use
May be more than light users need
1Gbps
£300-£800+
Larger offices, hosted desktops and cloud backups
Can be overkill for small teams
10Gbps
£1,000-£2,000+
Enterprise and data-heavy businesses
Limited availability and higher setup complexity
Our top UK providers include BTnet, Virgin Media Business, TalkTalk Wholesale, Vodafone, Colt, Community Fibre Business, and don’t forget to check out multiple alt-nets in regional areas.
Get accurate leased line pricing for your postcode →
Why leased line prices vary so much
Cost factor
Postcode
Providers price based on nearby fibre routes and network availability
Speed
Higher bandwidth usually increases monthly rental
Contract length
36-month terms often reduce monthly or installation costs
Provider network
An on-net provider may quote more competitively
Installation route
New ducts, fibre or civils can increase costs
Wayleave
Landlord or freeholder permissions can delay work
SLA
Stronger service levels can cost more
Managed router
Provider-managed equipment may be included or charged
Resilience
Backup circuits or diverse routing increase total cost
Rural location
Long build routes can make installation more expensive
Hidden Costs: What Providers Don’t Always Tell You While many leased lines come with “free installation”, this usually depends on your postcode and infrastructure availability, so here are some extra fees that can appear on quotes.
a) Excess Construction Charges (ECCs)
ECC trigger Why it adds cost
No nearby fibre route
Provider may need to extend the network
Blocked ducts
Civil engineering work may be required
Long driveway or business park route
More cabling may be needed
Roadworks or permits
Adds labour, time and permissions
Managed or listed building
Installation may be more complex
Rural location
Greater distance from fibre infrastructure
Wayleave required
Legal permission may be needed before installation
Typical ECCs can be £0-£3,000+, but complex builds can exceed £10,000. Your existing page already mentions this, and it should remain one of the main conversion points
Our tip
b) Installation Fees
Installation cost Typical range Notes
Standard installation
£0-£1,000+
Often waived on longer contracts
Activation fee
£250-£500+
May apply on shorter contracts
Complex installation
£1,000-£10,000+
Depends on survey, route and civils
Temporary connectivity
Quote required
Useful while waiting for installation
A “free installation” offer is only useful if the provider also explains what happens if the survey identifies additional build work.
c) Router or hardware fees
Typical cost Best for
Basic router
Included or low cost
Managed router
Included or £100-£150/month
Businesses wanting provider support
Managed firewall
£20-£150+/month
Security-conscious businesses
SD-WAN appliance
Quote required
Customer-owned firewall
Varies
Businesses with internal IT or MSP
d)Failover and resilience costs
Add-on Typical cost Why it matters
Static IP block
£0-£10+/month
Useful for servers, VPNs and remote access
4G/5G failover
£10-£60+/month
Keeps basic connectivity online during faults
FTTP backup
£30-£100+/month
Secondary leased line
Quote required
Best for mission-critical sites
Diverse routing
Quote required
Reduces single point of failure
e) Early termination charges
Leaving a leased line contract early can be expensive. Many providers require businesses to pay some or all of the remaining contract value, so before signing, check:
minimum contract length
early termination charges
upgrade terms
relocation terms
price increase clauses
renewal process
whether installation costs are recovered if you leave early
Leased Line Installation Explained (Timeline + Process) A leased line installation follows a structured timeline:
Stage
Typical duration
What happens
Availability check
Same day to a few days
Provider checks nearby network and fibre availability
Desktop survey
2-10 days
Initial check of likely route and build complexity
Full survey
1-2 weeks
Engineers inspect ducts, chambers, entry points and access
Wayleave
2-12+ weeks
Landlord or freeholder permission if required
Build work
2-6+ weeks
Fibre is installed, ducts cleared or routes built
Router and activation
1-3 days
Router installed, circuit tested and service activated
Most installations take 45-90 days, but difficult surveys, wayleaves and civil engineering can make the process longer.
Compare providers with faster installation options →
ROI: Is a Leased Line Worth the Cost? This is one of the most overlooked factors, and where leased lines shine. A leased line is worth the cost when the business value of reliability, upload speed and predictable performance is higher than the monthly rental.
A leased line is more likely to be worth it if…
Full fibre broadband may be enough if…
Your phones run on VoIP
You mainly use email and browsing
You use hosted desktops
You have a small team and light cloud use
You upload large files daily
You do not need guaranteed upload speeds
You rely on cloud systems to trade
You can tolerate occasional slowdowns
You need fast fault repair
Your site is not operationally critical
You run payment, booking or remote access systems
Full fibre is stable and affordable
Downtime directly affects revenue
Cost is more important than SLA
Leased line ROI: what creates the return? 1. Reduced downtime
Downtime can affect phone calls, online payments, staff productivity, customer bookings, cloud systems and remote access, and whilehe exact cost varies by business, the impact is usually highest for:
call centres
legal and accountancy firms
healthcare sites
hotels and venues
warehouses
online retailers
agencies handling large files
businesses using hosted desktops
multi-site operations
Leased lines are often bought because they offer stronger uptime commitments and fix times than standard broadband. BTnet advertises a 100% availability SLA and 5-hour target fix time, while Zen says leased lines include 99.9% uptime as standard, with 100% possible with resilience.
2. Faster uploads and cloud performance
Symmetrical speeds matter if your business uses:
Microsoft 365
Google Workspace
VoIP
cloud backups
CRM systems
hosted desktops
large design files
video calls
remote access
online booking systems
payment systems
If staff are regularly waiting for files to upload, calls to stabilise or cloud apps to sync, the time saving can be meaningful.
3. Better customer experience
A more stable connection can improve:
VoIP call quality
live chat response times
online booking reliability
payment-system uptime
customer Wi-Fi
remote user access
video consultation quality
service desk performance
This is especially important for customer-facing businesses where internet problems create visible service issues.
4. Scalability
Many leased line services can be upgraded without a full new installation, depending on bearer capacity and provider terms.
Starting point
100Mbps
500Mbps
1Gbps
1Gbps
Single circuit
Add backup, resilience or diverse routing
Leased line vs full fibre: ROI comparison
Feature Full fibre business broadband Leased line
Monthly cost
Lower
Higher
Installation
Usually faster
Slower and survey-led
Connection
Shared broadband
Dedicated circuit
Upload/download
Often asymmetric
Symmetrical
SLA
Weaker
Stronger
Fix time
Varies
Usually stronger
Best for
Many SMEs
Critical or high-demand businesses
ROI case
Lower cost
Better uptime and performance
Hidden-cost checklist before signing
Question to ask Why it matters
Is installation fully included?
Avoids surprise setup costs
Are ECCs capped?
Protects against unexpected build fees
Is a wayleave needed?
Avoids legal/permission delays
What is the SLA?
What is the target fix time?
Is the router managed?
Clarifies support responsibility
Are static IPs included?
Useful for servers, VPNs and remote access
Is failover included?
Avoids single point of failure
Can the speed be upgraded later?
Supports growth
What happens if we move premises?
Important for growing SMEs
What are early termination charges?
Avoids contract surprises
What is the total 36-month cost?
Compares providers fairly
Why trust our leased line reviews?
Our leased line guides are written to help UK businesses make practical buying decisions, not just compare headline prices.
We focus on:
realistic UK 2026 leased line pricing
Our verdict A leased line can be worth the cost if your business depends on fast, reliable, symmetrical internet. The strongest ROI usually comes from reduced downtime, better VoIP quality, faster uploads, more stable cloud tools and fewer productivity losses.
However, leased lines are not automatically the right choice for every SME. If your business has light internet usage, a stable FTTP business broadband connection may deliver better value.
The safest approach is to compare leased line quotes by postcode, speed, installation route, ECC risk, SLA, fix time, managed router options, failover and total contract cost before signing.
Compare leased line prices for your postcode →
FAQs
How much does a leased line cost in the UK in 2026?
A leased line usually costs around £150-£800+ per month for most SMEs. Enterprise and 10Gbps circuits can cost more. The final price depends on speed, postcode, provider, installation route and contract length.
What are the hidden costs of leased lines?
Hidden costs can include excess construction charges, installation fees, router or firewall costs, static IP blocks, failover, wayleave delays and early termination charges.
What are ECCs in leased line installation?
ECCs are excess construction charges. They apply when engineers need to carry out extra work to connect your premises, such as installing new fibre, clearing ducts, digging routes or dealing with complex access.
How long does leased line installation take?
Most leased line installations take 45-90 days, but complex sites can take longer if wayleaves, civil works or survey issues are involved.
Do leased lines have setup fees?
Some leased lines have setup or activation fees, often around £250-£500. Many providers waive standard installation on longer contracts, but ECCs may still apply after survey.
What is the ROI of a leased line?
The ROI depends on how much your business loses through downtime, slow uploads, poor VoIP quality or cloud disruption. Businesses that rely heavily on cloud systems, hosted desktops, large uploads or online trading are more likely to see a strong return.
Are leased lines worth it for small businesses?
A leased line can be worth it for a small business if internet downtime or poor performance directly affects revenue, staff productivity or customer service. If usage is light, full fibre broadband may be better value.
Do leased lines come with better SLAs?
Yes. Leased lines normally come with stronger SLAs than standard broadband. BTnet advertises a 100% availability SLA and 5-hour target fix time.
Is a leased line better than full fibre broadband?
A leased line is better if you need dedicated bandwidth, symmetrical speeds, strong uptime guarantees and faster fault repair. Full fibre broadband is cheaper and may be enough for many SMEs.
Can I reduce leased line costs?
Yes. Compare providers by postcode, choose the right speed, ask about ECC caps, compare 24 vs 36-month contracts, check full fibre alternatives and avoid paying for managed extras you do not need.
FAQs About Leased Line Costs 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.