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 2025 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 2025?
| 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.
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.
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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.
