Over time, standard broadband connections may outgrow the connectivity needs of a business. While there can be many reasons for this, the key reason is that more advanced options are now available compared to consumer-grade broadband. As a business expands, it only makes sense to upgrade to more reliable connections, such as dedicated internet lines, wireless leased lines, or traditional leased lines. Within leased line solutions, multiple bandwidth and speed options are available to suit different business requirements.
In this blog, we will discuss why a 100 MB leased line is a smart choice for many businesses and explore its associated costs. By the end, you will have a clear overview of the 100 MB leased line costs and prices in 2026 and whether it’s a good match for your business.
What is a 100 MB leased line?
A 100 MB leased line provides an exclusive internet connection between two locations, which can either be between an internet service provider and a business address or two different business premises. In both cases, it offers uncontended internet access with a guaranteed 100 MB bandwidth. This means the line is not shared with other users, resulting in minimal disruption, regardless of other internet users on the network.
A 100 MB leased line provides the following features to its users.
- Dedicated connection: 100 MB bandwidth is not shared with other users.
- Consistent speed: There is no competition for bandwidth, so the speed always remains consistent, not affected by the external traffic in the area.
- Service level agreements: A 100 MB leased line connection comes with a service level agreement to outline the provider’s service claims in terms of downtime, response times and customer service.
How much do 100MB leased lines cost in 2026?
| Charges associated with a 100 MB leased line | Range | Depending on factors |
|---|---|---|
|
Installation fee |
£0 – £20,000 |
|
|
Monthly charges |
£185 – £270/month |
|
|
Additional costs |
Varies by provider |
|
To fully understand the cost of a 100 MB leased line, it is important to look at the entire setup process. This involves the initial installation of the line, ongoing monthly costs and any additional charges mentioned in the provider’s contract.
That’s why we have presented the cost breakdown in three sections. Each will cover the relevant average prices in the UK and discuss the key factors that influence them.
Installation cost of a 100 MB leased line
For wired leased lines, the installation costs usually remain the same regardless of the selected bandwidth. This is because it mainly depends on the infrastructure instead of the capacity of the connection. The installation charges of a 100 MB leased line range from £0 to £20,000, depending on the following factors:
- Type of provider: Each provider follows its unique survey standards for site assessments and offers different pricing packages. Depending on the existing network infrastructure of the provider you choose, installation costs might vary.
- Location of the connection: If your chosen provider already provides coverage in your area, installation may be cheaper. But in remote locations, the provider would need to establish a new Point of Presence (PoP), leading to higher installation charges.
- The selected contract length: Many providers offer waivers on installation charges for users who sign up for 36-month or longer contracts.
- Wired or wireless leased line connection: Installation charges are significantly higher for wired leased lines (£10,000 – £20,000) than wireless leased lines (£1000 – £2000).
Monthly cost of a 100 MB leased line
The monthly cost of a leased line typically covers its connection capacity, symmetrical upload and download speeds, service level agreements, 24/7 customer support and security features.
In 2025, businesses can expect to pay between £185 and £270 monthly charges for a 100 MB leased line connection, depending on the following factors:
- Type of leased line: The monthly charges of a connection depend on the type of leased line you choose. Ethernet in the first mile (EFM) and Ethernet over fibre to the cabinet (EoFTTc) incorporate copper in their infrastructure, which makes them more affordable compared to a full-fibre option.
- Connection speed: The monthly prices increase with the increase in the speed of the connection.
- Service level agreements: The price of a leased line increases with the number and quality of SLAs offered by the provider. Faster response and resolution times guarantee a higher-tier service, which comes at a higher cost.
Additional charges for a 100 MB leased line
So far, we have covered the two major costs of a 100 MB leased line: installation and monthly charges. While these are the primary upfront expenses, many providers include additional charges outlined in the leased line contract. Common examples include:
- Early cancellation fee: If the user terminates the contract before it originally ends, a penalty fee may be charged.
- Maintenance charges: Some providers list maintenance as a separate charge rather than including it in the monthly cost.
- Hardware costs: Most providers adjust the cost of equipment to the monthly or installation charges. But others may charge separately for devices such as routers, modems, or network switches.
100MB Leased Line City Cost Breakdown
Since the price of a 100MB leased line varies across the UK, business location can have a huge impact on what you might pay monthly. The cost of leased lines comes down to how many fibre networks already exist in your region and how many leased line providers are competing for your quote.
By and large, leased line pricing quotes in larger UK cities tend to be low, as suppliers have previously paved out the essential infrastructure for such areas. On the other hand, rural or remote places can require new cable routes to be installed or other building works before the leased line installation, which increases the overall cost.
Here is a realistic pricing guide, which you can refer to depending on where your business is located:
| UK City | Monthly Cost |
|---|---|
|
London |
£210 to £250 |
|
Manchester |
£250 to £270 |
|
Leeds |
£270 to £300 |
|
Edinburgh |
£270 to £300 |
|
Birmingham |
£270 to £300 |
|
Bristol |
£280 to £310 |
|
Liverpool |
£270 to £300 |
|
Glasgow |
£270 to £300 |
|
Rural Areas |
£270 to £400+ |
Note: All monthly costs are based on a standard 36-month contract, the most popular option for UK businesses.
London has consistently had the most competitive pricing. That’s because the city is home to the highest density of fibre infrastructure as well as the most number of providers who are actively competing for business. In big regional cities like Manchester and Birmingham, prices are a little higher but still very affordable.
100MB Leased Line Contract Breakdown
Length is one of the most significant decisions you will face when selecting a leased line contract. The term you select influences your monthly expenses, whether you will pay for installation and how much flexibility you have if your business requirements evolve.
| Contract Length | Average Monthly Fee | Installation Price | Best For |
|---|---|---|---|
|
12-Months |
£240 to £280 |
£500 to £2,000+ |
Businesses that need flexibility and work on short-term projects. |
|
36-Months |
£180 to £220 |
Free |
SMEs and larger enterprises. |
|
60-Months |
£165 to £200 |
Free |
Stable businesses that want long-term savings. |
What contract length should you go for?
A 36-month contract provides the optimal balance of value and flexibility for most businesses. Free installation is a large saving, as it can cost anything from several hundred pounds to more than £20,000 depending on where you are based, and the monthly prices are a lot cheaper than a 12-month term.
Factors That Influence The Cost Of 100MB Leased Line
There are several factors that combine to form the overall price of a 100MB leased line. Below, we have listed the key factors that will help you make a more informed decision and prevent any surprise charges when getting quotes from providers.
1. Your Location
The location is arguably the largest driver of cost for a leased line. If your premises are near an existing provider exchange or fibre hub, installation is simple, and the costs remain low.
In a rural or other location not already part of provider coverage, they would have to build new infrastructure to get there. This extra civil engineering could add a substantial amount to your installation fee and monthly rental.
2. Contract Length
Your monthly payment is tied directly to the length of your contract. Longer contracts will spread out the costs over a longer time frame, thus lowering your monthly costs as the provider has more time to recover their infrastructure investment.
This charge is settled by the most preferred option, a 36-month contract, which not only usually includes free installation but also has significantly lower monthly charges than a 12-month deal.
A 60-month contract comes with the lowest monthly price but also locks you in for longer; however, it is a consideration worth thinking about in a market where both pricing and technology are still evolving.
3. Type Of Leased Line Technology
Not all leased lines use the same underlying technology, and that impacts the price. Although they are more expensive, full-fibre leased lines are the most reliable and future-proof option.
Solutions such as Ethernet in the First Mile (EFM) or Ethernet over Fibre to the Cabinet (EoFTTc) use a combination of fibre and copper, making them cheaper, but they normally provide lower performance than a pure fibre connection, which can result in slower connection speeds and less reliability for businesses that require high bandwidth.
4. Connection Speed
You will pay an increasing cost for the amount of extra bandwidth you need. A 100MB connection is a reasonably decent mid-range offering, but if you subsequently discover that you need to upgrade to 200MB or 1GB, expect to see your prices increase accordingly.
This expense is easier to manage with a connection on a 1Gb bearer, which refers to a data transmission capacity of one gigabit per second, simply because you can launch at 100MB and scale up as needed without needing new physical infrastructure.
5. Service Level Agreements (SLAs)
The level of service guarantee you receive will also influence the price. Providers provide several SLA tiers, which cover aspects such as uptime guarantees, fault response times and how quickly a fault will be fixed.
A provider that offers a four-hour fix time will likely charge more than one that provides a next-business-day response. If downtime is expensive for the business, it’s typically worth spending more on a strong SLA.
6. Number Of Providers In Your Area
High-intensity competition in areas with multiple providers leads to lower prices. In places served by only one or two carriers, there is less motivation for providers to cut costs, resulting in higher prices for consumers compared to areas with more competition.
This is also why using a comparison platform or broker to get multiple quotes is so useful, as it will give you a better idea of the true market rate that applies where you live.
Advantages Of A 100MB Leased Line
A 100MB leased line offers a range of benefits that standard business broadband cannot compete with. Here is why a leased line is worth pondering on if your business relies on uninterrupted, fast and secure internet connectivity.
1. Dedicated, Uncontended Connection
Unlike a broadband connection, a leased line is dedicated to a single user. Your entire 100MB bandwidth is dedicated to your business. This means you’ll never see slowdowns during peak hours when other users in your area are using the service.
2. Symmetrical Upload and Download Speeds
A 100MB leased line sends about 100MB both ways: downloading and uploading at that speed. That’s a huge plus over broadband, where upload speeds are usually a small fraction of download speeds.
For businesses that are regularly backing up data to the cloud, hosting video conferences, uploading big files, or running VoIP (Voice over Internet Protocol) phone systems, symmetrical speeds make a real impact on day-to-day productivity.
3. Guaranteed Uptime With Strong SLAs
Leased lines have strong service level agreements, and providers are held responsible for their quality of service. This is typically a 99.99% uptime guarantee for most business-grade leased lines, with guaranteed response and repair times in the event of a fault.
If the provider does not fulfil this commitment, they are contractually obligated to pay you. On standard broadband connections, this level of assurance isn’t possible.
4. Low Latency for Real-Time Applications
Leased lines provide some of the lowest latency available, which is defined as the time it takes for data to travel between your network and final destination. This matters for applications where delays lead to business losses, such as VoIP calls, video conferencing, remote desktop access, and cloud-based tools. With a leased line, these applications work without any interruption.
5. Scalability
The 100MB leased line is not permanent. The majority of the connections are on a 1GB bearer, which means they can handle data transfer rates of up to 1,000 megabits per second (Mbps).
As your business grows and your need for more bandwidth increases, you can easily upgrade your speeds without having to start over or incur additional costs for a complete reinstallation.
6. Improved Security
Unlike a broadband connection, with a leased line, your traffic does not traverse the public internet because there is a private, dedicated link between your premises and your provider.
This limits your exposure to some forms of cyber threats, such as DDoS attacks and data interception, and allows you to more easily maintain access security to cloud applications, remote servers, and VPNs by implementing stricter authentication measures and encryption protocols.
Who Needs A 100MB Leased Line?
A 100MB leased line isn’t suitable for every business, but it is a great solution for many organisations that feel they have outgrown standard broadband. Here are some businesses that need a 100MB leased line:
1. Small to Medium-Sized Businesses (10 to 30 Users)
A 100MB leased line comfortably supports a team of 10 to 30 people doing day-to-day business work, email, web browsing, video calls and working in the cloud with applications like Microsoft 365 or Google Workspace.
This dedicated bandwidth allows everything to function without users fighting against each other for speed at this team size.
2. Businesses With Increasing VoIP and Video Conference Dependency
A leased line is a sound investment if your business uses VoIP telephony or holds regular video meetings through Microsoft Teams or Zoom. VoIP and video conferencing are sensitive to both speed and how long it takes data packets to reach their destinations, and broadband’s contention issues can cause the quality of calls to suffer. However, a dedicated 100MB connection eliminates this problem.
3. Companies Using Cloud-Based Systems
For businesses operating on cloud platforms, be it customer relationship management (CRM) or enterprise resource planning (ERP) systems, a server hosted in the cloud, or even real-time data applications, leased lines with symmetrical speeds and reliable performance have huge benefits.
With a dedicated 100 MB leased line, anything involving uploading to or downloading from the cloud at scale becomes faster.
4. Professional Services and Creative Agencies
Large firms, including law and accountancy practices, architects, design studios, and marketing agencies, need to transfer large files and require fast, reliable connections for client-facing work.
These companies can’t afford a slow upload speed or an unreliable connection at a crucial moment. They need consistency, which a 100MB leased line provides.
5. Schools and Public Sector Organisations
A single connection often needs to support hundreds of concurrent users within educational institutions and public sector organisations. Be it students logging into online learning platforms or staff accessing centralised databases, a dedicated leased line ensures that the requirement for multiple users never compromises the experiences of others.
6. Multi-Site Businesses
A 100MB leased line can serve a private network that connects different sites for businesses with multiple office locations. This is particularly beneficial for organisations that require rapid, secure data sharing among branches or remote locations.
Is a 100 MB leased line the right choice for your business?
If your business relies on uninterrupted internet for video conferencing, transferring large files, or managing cloud-based functions, a 100 Mb leased line could be the perfect fit. It offers a balance of affordability and performance for businesses which need something more than basic broadband but don’t demand maximum bandwidth.
Here are some key advantages of choosing a 100 Mb leased line:
- Dedicated bandwidth: A 100 MB leased line offers dedicated bandwidth, meaning your connection is exclusive. This results in maximum privacy, minimum latency and consistent performance, which remains unaffected by any external traffic over the network.
- Symmetrical speeds: One of the main reasons businesses upgrade from broadband to a leased line is the need for high upload speeds. For everyday consumers, downloading speeds matter more because they typically use the internet for online browsing, music streaming, and downloading content. But for businesses, upload speeds are just as important. Tasks like transferring files to the cloud, hosting websites, maintaining a data backup, or other data-heavy operations all depend on fast upload performance, which is delivered by leased lines effectively.
- Secure and reliable: Service-level agreements act as a safety net for businesses. They highlight the guaranteed leased line features in the contract before the user signs up. If the actual service fails to meet the standards, the provider is legally obligated to offer compensation to the user. This reduces the risks associated with downtime, poor service quality or getting stuck in a long-term contract.
- Scalability: A 100 Mb leased line offers flexibility for future growth. Businesses can easily upgrade the speed of the connection without replacing it completely. Start by analysing your long-term internet requirements during the given contract period. Then, choose a line bearer that supports your expected maximum capacity. For example, selecting a 1 GB bearer allows you to start with a 100 MB connection and scale it later within the maximum limit of up to 1 GB.
What other speed options are available?
A 100 MB leased line is a solid mid-range solution for growing businesses, but it is not the only option available. It is best suited for small to medium-sized teams of 10-12 employees, especially those using VoIP systems, transferring data and files over the internet, or working with cloud-based tools.
That said, businesses should choose a leased line based on their specific needs. Here are a few other options:
- A 50 MB leased line offers similar reliability for a more affordable price. It is a perfect starting point for small businesses and can be easily upgraded as the company grows.
- A 10 GB leased line is designed for organisations with higher internet demands, like data warehouses or large-scale businesses with multiple locations. This option delivers maximum performance and bandwidth with premium service-level agreements.
Get a 100MB Leased Line for Your Business with ComparedBusiness UK
ComparedBusiness UK can help you link with the top leased line providers in the UK. Just submit your requirements in less than 2 minutes, and we will match you with the ones that offer 100MB leased line service. You can select the most suitable option based on your business needs. This service comes to you at no cost.
Leased lines usually take 45-85 days to install in the major cities of the UK. But it can take 90 days or more if you want to install a leased line in a rural area. The reason for this difference in pricing is the existing infrastructure in urban vs. rural areas. The installation price may get expensive for areas not already included in the provider’s coverage network.
A 100 MB leased line provides a great starting point for small to medium-sized businesses to meet their connectivity needs. It offers an uncontended connection, high privacy, security, maximum performance, and minimum latency, all while providing symmetrical download and upload speeds.
Most providers offer a minimum 12-month contract for leased lines. On the other hand, the maximum length of contracts varies with providers and can extend up to 60 months. Typically, an ideal contract length for a leased line is 36 months because the providers offer additional benefits, better pricing and discounts for longer terms.
