Business Broadband Explained and Compared

Business broadband often runs over exactly the same cables as the consumer package next door, which makes the price difference look hard to justify. What you are paying for is not usually speed. It is what happens when the connection stops working, and how quickly someone is obliged to fix it.

What you get that consumers do not

A service level agreement. The important one. A consumer fault is fixed when an engineer is available. A business SLA commits the provider to a fix within a stated number of hours, with money back if it misses.
Priority support. Separate queues, usually UK based, and staff who can escalate a line fault rather than reading from a script.
A static IP address. Needed if you host anything yourself, run a VPN back to the office, or use remote access to machines on site.
Lower contention. Business circuits are shared with fewer other customers, so evening slowdowns are less pronounced.
Cleaner terms on use. Consumer contracts often prohibit running a business over the line at all, which can matter if you ever need to claim.

The three tiers

Most businesses end up in one of three places.

Business broadband is the entry point. Same underlying network as a home connection, better support and a modest SLA. Suitable for a small office, a shop or a team that can survive a day offline without losing money.

Business full fibre gives you higher speeds and much better upload, still on a shared network but with faster fix commitments. This is where most growing businesses sit, particularly any that moved their phones or their files into the cloud.

A leased line is a dedicated circuit, not shared with anyone. Upload and download match, the speed is guaranteed rather than advertised as up to, and fix times are typically measured in hours. It costs several times more than business broadband and usually takes weeks or months to install, because it often means digging.

When a leased line is worth it

Work out what an hour offline costs you. If the answer is a quiet afternoon, business broadband is fine. If it means a shop that cannot take card payments or a team of thirty unable to work, the sums change quickly.

The other trigger is upload. Cloud backups, video calls across a whole office, sending large files to clients and hosting anything internally all lean on upload, and shared connections give you far less of it than download. A symmetric circuit removes that ceiling.

The phone line question

The old analogue phone network is being switched off, with the deadline currently set for the end of January 2027. Any business still running phones over traditional lines will need to move to a system that works over the internet before then. It is worth handling that at the same time as a broadband change rather than twice, and it raises the stakes on connection reliability, because once the phones run over broadband an outage takes the calls down too.

What to check before signing

The actual fix time in the SLA, and what compensation applies when it is missed.
Whether the speed is guaranteed or advertised as up to.
Upload speed, separately from download.
Contract length. Business terms often run longer than consumer ones, and leased lines commonly run three years.
Installation cost and lead time, which for a dedicated circuit can be substantial.
Whether a static IP is included or charged as an extra.

We are building out business broadband comparison. In the meantime our provider reviews cover the companies that sell to businesses as well as homes, and the broadband deals pages show what is available at your postcode on the consumer side.

Frequently asked questions

Is business broadband worth the extra cost?

It depends what downtime costs you. The premium mostly buys a fix-time commitment and priority support rather than more speed. A business that loses money while offline will recover the difference from one avoided outage.

What is the difference between business broadband and a leased line?

Business broadband shares a network with other customers and advertises speeds as up to a figure. A leased line is a dedicated circuit with guaranteed matching upload and download speeds and fix times measured in hours. It costs considerably more.

Can I run a business on a home broadband package?

Technically it usually works, but many consumer contracts prohibit business use, and there is no fix-time guarantee. If being offline for a day would cost you money, it is a false economy.

Do I need a static IP address?

Only if you host services yourself, need remote access to equipment on site, or run a VPN back to the office. Most small businesses using cloud software do not.

What happens when the old phone network is switched off?

Traditional analogue phone lines are being retired, currently scheduled for the end of January 2027. Businesses still using them will need to move to a phone system that runs over the internet before that date.