What Is a Fair Usage Policy on Broadband?

A fair usage policy on broadband is a set of rules in your broadband provider’s terms and conditions that limits how the connection can be used, designed to stop a small number of customers consuming so much bandwidth that everyone else’s service suffers. It is part of the contract you agree to, and it sits alongside, but is separate from, any data cap or acceptable use policy.

Most UK fixed-line broadband deals are now sold as unlimited, and old-style download restrictions have largely been removed. But the phrase still causes confusion, especially because mobile and satellite services often work differently. Here is how a fair use policy works in 2026, what counts as excessive, and which providers apply one.

• A fair usage policy (FUP) restricts how you use your broadband, but rarely sets a fixed monthly figure on fixed-line deals.
• It is not the same as a data cap, which is a specific monthly allowance with penalties for going over.
• Most UK home broadband is now truly unlimited with no FUP or traffic management on standard plans.
• Mobile, fixed-wireless and satellite broadband are more likely to apply a fair use limit, such as EE’s published 600GB-per-month mobile threshold.

Fair use policy vs data cap: what’s the difference?

A fair use policy and a data cap are two different things, and confusing them is the most common mistake UK broadband customers make. A data cap is a specific monthly allowance, such as 100GB, with clear penalties like extra charges or slower speeds once you exceed it in a billing cycle. A fair usage policy is deliberately broad and usually sets no fixed figure at all.

Fair use policies are vague on purpose. They exist to catch a small number of users whose consumption is far outside normal household patterns and could degrade the network for others, rather than to police every customer’s monthly total. Because they don’t specify a hard limit, most households never come close to triggering one.

Is “unlimited” broadband really unlimited?

Most UK fixed-line broadband sold as “unlimited” in 2026 is unlimited, with no fair use limit or traffic management on standard packages. Under Advertising Standards Authority (ASA) rules, a provider cannot hide a data limit in the small print and still call a service unlimited.

“Truly unlimited” means the connection runs at the fastest speed your line supports, with no restriction on how much you download and no penalty for heavy use. That said, an unlimited label does not automatically mean there is no fair usage policy at all. A provider can still apply a broad FUP focused on extreme or non-personal use while legitimately advertising the service as unlimited.

The ASA’s two-part test, set out in its guidance on unlimited claims, allows the word only when a legitimate customer incurs no extra charge or suspension for going over any usage threshold, and any speed or usage limits that do apply are moderate. A legitimate user is simply someone who follows the terms and conditions; exceeding a usage level for lawful activity does not, on its own, make you an illegitimate user.

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Will my broadband be slowed down if I use too much?

On standard UK fixed-line broadband, your connection is very unlikely to be slowed down for heavy use, because most home providers apply no traffic management to general internet traffic. Ofcom’s net neutrality rules require providers to treat all internet traffic equally and not give preferential treatment to particular sites or services.

Providers may use “reasonable” traffic management in limited cases, but they must be clear and transparent about it. In Ofcom’s ninth annual net neutrality monitoring report, published 20 February 2026, the regulator found no significant cause for concern across the UK market, though it noted it was engaging with one provider over a tethering policy and flagged newer products, including a recently launched speed-boost add-on that prioritises a customer’s traffic when switched on.

Where traffic management does exist on home broadband, it tends to be narrow. Some TV bundles, for example, prioritise live TV streams so they don’t buffer, rather than throttling your downloads. For most households, peak-time slowdowns are far more likely to come from your own home setup or local network congestion than from a provider enforcing a fair use policy.

How much data counts as excessive use?

There is no single figure for excessive use on UK home broadband, because most fixed-line fair use policies set no specific cap. To put typical use in context, Ofcom’s Connected Nations 2025 report (published 19 November 2025, based on July 2025 data) found average data use across all connections was 583GB per month, up 10% on the 531GB recorded in July 2024.

Full-fibre households use more. Ofcom recorded average use of 738GB per month on full-fibre connections in the same period, reflecting how more capable lines encourage streaming, gaming and cloud backups. These figures show that even a household using well over 500GB a month is firmly within normal territory, not excessive.

For heavy users wanting headroom, a fast full-fibre line removes most practical worries about hitting any limit. Our guide to BT Full Fibre 100 for heavy usage homes covers the kind of package that comfortably handles multi-person streaming and large downloads.

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A faster full-fibre line gives you the headroom to stream, game and back up without worrying about fair use.

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What happens if you breach a fair usage policy?

If you breach a fair usage policy, the most common consequence is traffic management or de-prioritisation rather than a charge or disconnection, particularly on mobile and mobile broadband. Providers usually take a soft approach, because aggressive enforcement risks breaching ASA rules and losing the right to use the word “unlimited”.

On mobile services, breaching the FUP typically means your traffic is deprioritised at busy times, so you may notice slower speeds at congested sites during peak hours. On home broadband, a genuine breach is rare and tends to relate to using a residential connection for commercial purposes, which most providers prohibit unless agreed in advance.

Disconnection or account termination is generally reserved for the acceptable use policy rather than the fair use policy. An acceptable use policy (AUP) sets out activities you’re prohibited from undertaking, such as illegal downloading or sending spam, and explains why an account could be suspended or closed.

Which UK providers don’t have a fair usage policy?

Several major UK home broadband providers apply no fair use limit or general traffic management on standard fixed-line plans, meaning the service is effectively unlimited for normal household use. Positions vary by provider and package, so always check the current terms before you sign up.

• Some large providers apply no fair use limit and no traffic management on home broadband at all.
• Others apply traffic management only to TV bundles, prioritising live TV streams rather than limiting your downloads.
• A small number of providers keep a broad fair use clause aimed only at non-personal or commercial use.

Fixed-line broadband is where you’ll find the fewest restrictions. Full-fibre providers, including those delivering high-speed lines such as Hyperoptic 500Mb full fibre, are built to carry heavy, unmetered traffic. The exceptions to watch are non-fixed technologies, where data limits are far more common.

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Why mobile and satellite broadband still apply fair use limits

Mobile, fixed-wireless and satellite broadband are more likely to apply fair use limits because they share finite radio or satellite capacity rather than a dedicated fixed line into your home. This is why a fair usage policy is far more visible on a mobile data plan than on home fibre.

EE’s mobile fair use policy is the clearest published example. EE states it will consider usage above 600GB per month to be non-personal use and reserves the right to apply traffic management that deprioritises your traffic during busy periods, or to move you to a business plan. Other UK mobile networks operate similar thresholds in the same broad way.

In a ruling published on 21 May 2025, the ASA examined EE’s “unlimited” mobile claims and its 600GB fair use policy. It decided the unlimited claim itself was not misleading, because users incurred no charge or suspension and the restrictions were moderate, with congested sites making up only 4% of the network. However, the ASA upheld one part of the complaint: EE had not made the fair use qualification clear, so the ad was misleading on that point, and EE was told to qualify its unlimited claims directly with the terms of its fair usage policy.

If you’re choosing between a fixed line and a mobile or satellite alternative, the headline package isn’t the only thing to weigh up. You can compare local broadband deals by area to see which fixed-line options reach your address before relying on a capacity-limited service.

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Information correct as of 24 June 2026. Prices, tariffs, policy details and providers change frequently, so please check the latest details before making a decision. This article is for general information only and does not constitute financial advice.