BT Broadband Deals 2026: Best Full Fibre Offers Compared

Deals checked: 15 August 2026

BT Full Fibre deals compared

These are the principal prices being advertised on BT's dedicated broadband deals page when we checked on 15 August 2026.

The offers available after entering your postcode can differ, so think of this table as a snapshot rather than a guaranteed national price list.

Don't compare BT Broadband deals using only today's monthly price

BT's current terms state that the monthly price of its broadband plans increases by £4 on 31 March each year.

That matters on a 24-month contract.

If you take a new package in August 2026, your contract passes through both the March 2027 and March 2028 price-change dates.

This is why we are deliberately not publishing a simplistic “24-month total” based on multiplying today's monthly price by 24.

The exact amount depends on your activation date, billing dates and how many months of your individual contract fall either side of each 31 March increase.

The important thing is to compare providers using the whole contract price path, not just the attractive number at the start.

Which BT broadband deal should you actually choose?

BT Full Fibre 150 deal: the sensible starting point

For many households, Full Fibre 150 is enough.

That may sound conservative when providers advertise 500Mbps and 900Mbps packages so heavily, but normal internet use is less bandwidth-hungry than many people assume.

A household can stream television, join video calls, browse, use social media and play online games comfortably without requiring anything close to 900Mbps.

The biggest differences become apparent when downloading very large files or when many heavy users are active simultaneously.

That makes Full Fibre 150 a sensible value benchmark.

BT Full Fibre 300 deal: usually the sweet spot

Full Fibre 300 is an easy package to recommend in isolation.

It gives a busy household a substantial amount of capacity without moving all the way into premium 900Mbps territory.

For three to five people regularly streaming, gaming, working from home and downloading files, 300Mbps is already extremely capable.

However, there is a wrinkle in BT's current pricing.

When we checked, Full Fibre 300 was £31.99 and Full Fibre 500 was £32.99.

That makes the 300 package difficult to recommend when the same customer is genuinely being offered 500 for only £1 more.

Always look at the actual price gap rather than assuming the neat middle package is automatically the best choice.

BT Full Fibre 500 deal: our current value pick

Full Fibre 500 is the most interesting package in BT's current deal structure.

BT was advertising it for £32.99 per month when we checked, compared with £31.99 for Full Fibre 300.

That means a nominal doubling of the extra spend from 300 to 500 costs only £12 across a year before scheduled price changes, assuming the £1 differential remains intact.

You still should not buy speed purely because the number is larger.

But when the price difference becomes this small, 500Mbps offers plenty of headroom for:

• Large families
• Multiple 4K streams
• Frequent console and PC game downloads
• Cloud storage
• Large work files
• Content creators
• Homes with numerous simultaneous users

BT Full Fibre 900 deal: when maximum speed makes sense

Full Fibre 900 is BT's fastest mainstream residential Full Fibre tier, offering speeds up to 900Mbps.

The current deal we checked was £35.99 per month.

That is actually only £3 more than the advertised Full Fibre 500 price.

At that gap, some people will reasonably decide to take the maximum tier.

But there are two reasons not to buy automatically.

First, ordinary web browsing, video streaming and online gaming do not suddenly become proportionally better because your connection moves from 500Mbps to 900Mbps.

Second, your Wi-Fi needs to be capable of delivering high speeds to the device you are using. A poor wireless signal in an upstairs bedroom will not magically become a 900Mbps Wi-Fi connection because the fibre entering the house is faster.

Full Fibre 900 is therefore most valuable when you regularly move very large amounts of data or have an unusually demanding household.

Does the fastest package give you faster Wi-Fi?

Not automatically.

The Full Fibre package determines the broadband capacity delivered to the BT Hub.

Your Wi-Fi connection is the separate wireless link between the hub and devices around your home.

A 900Mbps fibre line can therefore coexist with a poor Wi-Fi connection upstairs.

Building materials, distance, interference, router positioning and device capability all matter.

BT now has Smart Hub 3 in its consumer range, with dual-band Wi-Fi 6, while Complete Wi-Fi can be used where a property needs additional wireless coverage.

For more detail on routers, reliability and BT's wider service, see our BT Broadband Review 2026.

Can you get these BT Full Fibre deals everywhere?

No.

BT Full Fibre uses FTTP — Fibre to the Premises — where fibre runs directly into the property.

The rollout is extensive but it is not yet available at every UK address.

BT says the best way to establish what you can receive is to use its postcode checker. Where Full Fibre is unavailable, BT can show alternative broadband products available at the property.

You may also find that not every Full Fibre speed tier is offered at your individual address.

Are the best BT broadband deals for new customers?

Public broadband deal pages are principally useful for customers shopping for a new BT connection.

That does not mean every new customer gets an identical price.

BT can change promotions, target particular packages and present deals according to address availability.

Reward cards or other introductory incentives can also appear and disappear over time.

When comparing a BT offer against another provider, look beyond the headline monthly price and check:

• Initial monthly price
• Scheduled annual increases
• Minimum contract term
• Activation fees
• Reward cards
• Router supplied
• Guaranteed speed
• Upload speed
• Any additional products bundled into the order

A large reward card can materially change the effective first-term cost, but only count it if you are eligible and will actually claim it.

What if you are already a BT Broadband customer?

Existing BT customers should not assume the public deals in the table above are their renewal prices.

BT has a separate account-specific upgrade process and explicitly invites existing customers to log in for personalised deals.

Your offer can depend on your current service, contract status, available technology and whether BT is encouraging you to move onto Full Fibre.

We are also building a dedicated guide to BT deals for existing customers, because renewal strategy, retention offers and recontracting deserve to be treated separately from new-customer broadband pricing.

What else do you get with BT Broadband?

A broadband deal is more than its Mbps figure.

BT's current proposition can include features such as its Stay Fast Guarantee, security products and modern Smart Hub hardware.

Customers can also consider Complete Wi-Fi and the Halo range where they want more extensive home coverage or connectivity features.

Stay Fast Guarantee

BT provides a personalised speed guarantee to the hub.

BT's current Full Fibre information states that if it cannot restore a qualifying connection to the guaranteed speed after the required process, customers can receive a £20 Reward Card, with up to four claims per year.

Remember that this is a guarantee concerning speed reaching the hub — not a promise that every phone or laptop in every room will receive the same speed over Wi-Fi.

Complete Wi-Fi

Complete Wi-Fi is intended to improve wireless coverage around the home using additional Wi-Fi equipment.

BT's current terms state that it can provide up to three discs and offers a £100 bill credit if it cannot provide qualifying Wi-Fi coverage after the guarantee process.

For a large or difficult property, this could be more useful than paying for the fastest broadband package.

BT Halo

Halo adds further connectivity and service benefits.

Halo 3+ can include Hybrid Connect, which uses EE mobile connectivity to provide backup when the fixed broadband suffers a qualifying fault.

That is most relevant to households that place a high value on remaining connected.

Read our separate BT Halo 3 Review before paying extra purely because Halo is presented as the premium option.

Should you pay more for Full Fibre 900?

The current BT deal structure makes this a more interesting question than usual.

At the time of our check:

Full Fibre 500 was £32.99.

Full Fibre 900 was £35.99.

A £3 monthly difference is small enough that power users may reasonably choose 900.

But value is not measured solely by how many Mbps you receive per pound.

If a household never approaches the limits of a 300Mbps connection, buying 900Mbps because it has a better “Mbps per pound” calculation still means spending money on capacity that goes unused.

Choose the lowest tier that comfortably handles your usage — unless a promotion makes the next tier so inexpensive that the additional headroom is genuinely worth having.

BT Broadband deals vs cheap broadband providers

BT is not the only company selling broadband over the Openreach network.

That creates an important comparison.

Two providers can use broadly the same underlying access network while offering different:

• Monthly prices
• Routers
• Customer service
• Wi-Fi products
• Contract terms
• Price increases
• Reward incentives
• Backup connectivity

This means the BT name alone does not automatically justify paying substantially more.

Where the gap is small, BT's broader support and product ecosystem can be compelling.

Where another provider is substantially cheaper for an appropriate speed, compare the complete proposition before committing.

How often should you check BT Broadband deals?

BT promotions change.

That is particularly relevant to a page like this because the exact price is much more volatile than the underlying technology.

Full Fibre 500 being £32.99 today does not mean that price should be treated as permanent.

Our approach is therefore to keep the package analysis relatively stable while clearly dating the live-deal snapshot.

Before buying, always click through and check the current postcode-specific price.

Which BT Broadband deal would we choose?

BT Broadband deals FAQs

How Switchking compares BT Broadband deals

This page is designed as a live commercial comparison rather than a second version of our main BT Broadband review.

We compare the deals using:

• Current monthly price
• Scheduled contract price rises
• Download speed
• Price difference between adjacent tiers
• Contract length
• Upfront fees
• Address availability
• Customer eligibility
• Router and Wi-Fi proposition
• Speed guarantees
• Reward incentives where offered
• How much speed different households genuinely need

Prices are time-sensitive. The package analysis may remain useful for longer, but always check BT's live site before ordering.