Choosing the right internet connection for your business can feel confusing when the options all promise fast, reliable service. Two of the most common choices are a leased line and business broadband, and while both provide internet access, they work in very different ways. This guide explains what each option offers, how they compare, and which situations suit each one, so you can make an informed decision for your organisation.
What is a leased line?
A leased line is a dedicated, private connection between your premises and the wider internet or another site. Because the line is reserved solely for your business, the bandwidth is not shared with anyone else, so performance stays consistent regardless of what other users in your area are doing.
Leased lines are symmetrical, meaning your upload and download speeds are the same. This is particularly useful for tasks such as backing up data to the cloud, running video conferencing at scale, or hosting your own services. They also typically come with strong service level agreements that guarantee availability and quick repair times. If you would like to explore the options in more detail, our guide to leased lines covers speeds, contracts and installation.
What is business broadband?
Business broadband delivers internet access over shared infrastructure, usually the same networks that serve homes and other businesses in your area. It often uses fibre-to-the-cabinet or full-fibre technology and can offer impressive speeds at a much lower price point than a leased line.
Because the connection is shared, speeds can vary depending on how many people are online at peak times. Business broadband is generally asymmetrical, with faster download speeds than upload speeds. It tends to come with business-grade support and better reliability than a standard residential package, but without the guarantees of a dedicated line.
The key differences
The most important distinction is that a leased line is dedicated and business broadband is shared. This affects everything from consistency of speed to the guarantees you receive. With a leased line, the advertised speed is what you get around the clock; with broadband, the speed you experience can fluctuate.
Service level agreements are another major difference. Leased lines usually include guaranteed uptime and defined repair times, often with financial credits if targets are missed. Business broadband may offer priority support, but rarely with the same firm commitments. A dedicated internet access service is one way to secure that guaranteed, uncontended performance.
Cost and installation also differ. Business broadband is quicker to install and cheaper on a monthly basis. A leased line requires more setup, sometimes involving new cabling, and carries a higher price, reflecting the dedicated capacity and stronger guarantees.
Which one is right for your business?
Business broadband is often a sensible choice for smaller teams, businesses with modest internet needs, or as a cost-effective way to stay connected without heavy reliance on cloud services. It suits organisations where occasional variability in speed is acceptable.
A leased line makes sense when connectivity is critical to daily operations. If your team relies heavily on cloud applications, moves large volumes of data, runs voice-over-IP telephony, or cannot tolerate downtime, the reliability and guaranteed performance of a leased line can be well worth the investment.
Many businesses take a blended approach, using a leased line as the primary connection and business broadband as a backup. This provides resilience so that if one connection fails, work can continue on the other.
Things to check before you decide
Consider how many people depend on the connection, what applications they use, and how disruptive an outage would be. If a few hours offline would seriously affect your revenue or reputation, the guarantees of a leased line may be justified.
Also review the contract terms, installation timescales and any equipment included. Leased lines can take longer to provision, so factor that into your planning if you are moving premises or scaling up. A good provider will assess your requirements and recommend an option that fits both your needs and budget. If you would like tailored advice, our connectivity and telecoms team can help you weigh up the choices.