Best BT Broadband Deals UK 2026: Full Fibre Prices & New Customer Offers

Last updated: September 2026 — prices and availability verified before publication.

If you’re hunting for the best BT broadband deals right now, you’re in the right place. BT has overhauled its pricing structure in 2026 with a stepped-pricing model — so the price you pay in month one is not the price you pay in month 24. That’s something most deal comparison sites gloss over, and it matters a lot when you’re working out your actual monthly spend. This guide cuts through all of that, shows you exactly what each BT package costs over 24 months, and tells you which one is worth your money.

We’ve also tackled the new-vs-existing-customer gap, which is bigger than BT would like you to notice, and explained BT’s annual in-contract price rise so there are no nasty surprises mid-contract. Whether you’re switching for the first time or renegotiating at renewal, this article covers everything you need to make the right call. Prices below are verified as of September 2026 — always click through to confirm the latest figure before signing up.

For a deeper understanding of BT’s packages and value across 2026, see our full BT broadband review.

Best overall

Our top pick is BT Full Fibre 300 at £30.99/mo — BT’s current entry-level full fibre tier (Full Fibre 150 was discontinued), 300Mbps with the Stay Fast Guarantee, the sweet spot for most UK homes.

Check BT Full Fibre 300 →

BT Full Fibre 300

£30.99/mo

BT Broadband Prices September 2026

Correction, 25 September 2026: re-verified all prices directly on bt.com/broadband/deals — BT has restructured since this guide was last checked. The Full Fibre 150 tier this guide previously recommended as its top pick no longer exists — BT’s cheapest full fibre package is now Full Fibre 300 at £30.99/mo, and this guide has been re-ranked around it throughout (every section, FAQ and CTA on this page now reflects the current 300/500/900 lineup, not the old 150/300/500/900 one). BT has also moved from the granular month-8/month-20 stepped pricing to a simpler model: one price today, then one rise every 31 March, disclosed up front for the next two years (shown in the table above). Reward Card figures are time-limited promotions BT refreshes regularly — check bt.com before ordering to confirm the current incentive value and expiry date.

BT Broadband Deals — Quick Verdict

BT Full Fibre 300 — Best BT Broadband Deal for Most Homes

Full Fibre 300 is where most people should start — it’s BT’s current entry-level full fibre package, following the discontinuation of the old Full Fibre 150 tier (confirmed live on bt.com, 25 September 2026). It costs £30.99/mo today, rising to £34.99/mo from 31 March 2027 and £38.99/mo from 31 March 2028 — one predictable rise a year, disclosed up front, rather than the old month-8/month-20 stepped model. The Stay Fast Guarantee backs this package with a minimum speed promise of 150Mbps, so if BT can’t deliver at least that, they’ll compensate you or let you walk away without a penalty fee.

At 300Mbps average with 49Mbps upload, this comfortably handles four or more people streaming, gaming and on calls at once. The Reward Card attached to this package adds genuine value — but BT refreshes incentives regularly — check the current Reward Card value and expiry date on bt.com when you click through. BT throws in its Smart Hub router on every package, which is a decent piece of kit for most homes. If you’ve got a larger property or thick walls, you can add BT Complete Wi-Fi mesh nodes as an optional extra — BT doesn’t publish a fixed price for this add-on, so check the current cost on bt.com. For most UK households, Full Fibre 300 covers everything without overcomplicating your bill.

Pros

• Lowest full fibre price in the current BT range (£30.99/mo)
• Stay Fast Guarantee — 150Mbps minimum or compensation
• Full fibre (FTTP) — not copper-dependent
• Smart Hub router included free
• Reward Card adds upfront value

Cons

• £4/mo in-contract rise each 31 March
• 24-month lock-in
• Reward Card offer changes frequently — verify before signing
• No lower full fibre tier exists any more — if £30.99/mo is a stretch, Fibre Essential (FTTC, £28.99/mo) is the only cheaper BT option

Check BT Full Fibre 300 deals →

New BT Customers vs Existing Customers: The Full Picture

Existing BT customers are locked out of most new-customer deals — but there are legitimate ways to get a lower price without leaving. New customers get the attractive opening prices you’ve seen above, plus Reward Cards worth up to ~£150. Existing customers renewing at the end of their contract get neither. Renewal pricing is higher than new-customer pricing for the same speed tier, and there are no Reward Cards on the table. The gap between what a new customer pays and what a renewing customer is offered for the same package can be £10–20/mo.

That gap compounds over 24 months. If you’re paying £15/mo more than a new customer for the same Full Fibre 300, that’s £360 extra over the contract term — before you even factor in the Reward Card you didn’t receive. This isn’t unique to BT; most big broadband providers work the same way. But BT is one of the providers where the retention team actually has flexibility to match or come close to new-customer pricing if you push for it.

BT’s retention team number is 0800 783 1401. Call them within 30–60 days of your contract end date and tell them you’re comparing alternatives. They have access to deals that don’t appear on the website, and many customers report getting close-to-new-customer rates without having to actually switch. Even if you don’t get a perfect match, you’ll typically do better than the auto-renewal price. Whatever you do, don’t let your contract expire and roll onto a monthly rolling rate without negotiating first — that’s the most expensive outcome. For context on compare all UK broadband providers before that call, so you’ve got genuine alternatives to reference.

BT Broadband Deals for Existing Customers: What You Can Actually Get

BT’s best broadband deals are reserved for new customers — but existing customers are not without options. Here’s a practical guide to what’s available and how to get it, whether you’re mid-contract or approaching your renewal.

Mid-contract options

Inside a 24-month contract, BT won’t reduce your monthly price. What they will do is let you upgrade to a faster speed tier — useful if your household’s usage has grown since you signed up. Log into your BT account online and check the “My BT” section for upgrade options, or call 0800 783 1401 to ask what’s available. BT sometimes lets existing customers move to a higher tier at a modest premium without restarting a fresh 24-month term.

At renewal: how to negotiate a better price

BT sends renewal reminders 30–60 days before your contract ends. The quoted renewal price in that letter is not the best price — it’s the opening offer. Before calling BT, get live quotes from at least two competitors (EE and Virgin Media carry the most weight with BT’s retention team). Then call 0800 783 1401, state that you’re reviewing your options, and ask what they can offer. Existing customers who negotiate often receive:

• Renewal pricing £3–8/mo below the standard renewal rate
• Free speed tier upgrades (for example, moving from Full Fibre 300 to Full Fibre 500 at no extra cost)
• A partial Reward Card — smaller than the new-customer incentive but still valuable
• A 12-month renewal option instead of 24 months, if you want more flexibility

If the first agent quotes the standard renewal price, ask specifically to be transferred to the disconnections or retentions team — they have more pricing authority. Have a real competitor quote to hand: a specific figure from EE or Virgin is far more effective than a vague “I’m thinking of switching.” If you’d like to compare what BT’s rivals are currently charging before making that call, our guide to all UK broadband providers compared covers current prices across every major network.

Switching away and returning for a new-customer deal

If BT cannot match what you’re being offered elsewhere, switching is simpler than most people expect — the One Touch Switching process means you sign up with the new provider and they coordinate the rest. If you later want to return to BT, wait more than 90 days after leaving: BT’s systems typically reclassify you as a new customer after that period, giving you access to the full new-customer deal structure including Reward Cards. For guidance on making the switch, see our how to switch broadband UK guide.

BT’s Annual In-Contract Price Rise Explained

Update, 25 September 2026: BT has simplified this since the worked example below was written — it no longer uses granular monthly stepping (a different price at month 9, another at month 21). The current model, confirmed live on bt.com, is one price today and one rise every 31 March, disclosed up front for the full two years. On Full Fibre 300, that’s £30.99/mo now, £34.99/mo from 31 March 2027, and £38.99/mo from 31 March 2028 — a £4/mo rise each time. Every tier follows the same pattern (see the pricing table earlier in this guide for each one’s exact figures).

Is BT’s rise better or worse than competitors? It’s more predictable than CPI-linked or CPI+X% rises used by other providers — where your increase depends on that year’s inflation figure. BT’s fixed £4/mo rise, disclosed at sign-up for the next two years, is a known quantity you can budget for upfront rather than a stepped structure that changes partway through your own contract.

BT’s Stay Fast Guarantee — What It Actually Means

BT’s Stay Fast Guarantee is a minimum speed promise that comes with every Full Fibre package. If BT consistently fails to deliver that minimum speed, you have the right to leave the contract penalty-free, or BT will compensate you. Here’s what the guarantee looks like across the full fibre range:

Table updated 25 September 2026 — the Full Fibre 150 tier this guarantee table previously listed has been discontinued by BT; Full Fibre 300 is now the entry-level tier.

The guarantee matters because it makes BT’s advertised speeds meaningful rather than aspirational. Most providers quote “up to” speeds that are network-wide averages — your actual speed can vary by time of day. BT’s guarantee gives you a floor. If your line consistently falls below it, contact BT and document the issue. If the problem is on their network, you can claim compensation or exit the contract without a penalty fee.

How BT Compares to Sky, Virgin and Vodafone

Sky uses the same Openreach infrastructure as BT Full Fibre, so speeds are often comparable — the difference comes down to pricing, bundle options and customer service. Sky tends to headline at a lower price but doesn’t offer the same speed guarantee. For a full breakdown, read our BT vs Sky compared article. Virgin Media runs its own cable network with higher peak speeds in some areas, though coverage outside cities can be patchy. Vodafone uses Openreach and is worth a look for no-frills full fibre at a competitive price. To weigh all your options before deciding, our guide lets you compare all UK broadband providers side by side.

BT Broadband and TV Deals: Bundles, Phone and What’s Worth Adding

BT now sells its TV service under the EE brand, though you can still order through bt.com. A BT broadband and TV bundle combines your full fibre internet connection with a TV package and optionally a phone line on a single monthly bill.

EE TV with BT broadband

The TV service bundled with BT Full Fibre uses IPTV — streamed over your broadband connection, no satellite dish required. The interface brings together on-demand content from multiple services, with Netflix, Disney+, Apple TV+ and Prime Video available as bolt-ons. Sport add-ons (EE Sport and Sky Sports) are available at an additional monthly cost (as of September 2026 — verify current TV bundle pricing on bt.com, as it changes independently of broadband pricing). Full Fibre 300 (BT’s entry-level tier) is more than enough for a TV bundle — Full Fibre 500 is a better fit if you have 4+ people streaming simultaneously alongside the TV package.

Phone line: Digital Voice

BT’s old analogue phone line is being replaced as part of the national PSTN switch-off, due to be complete by January 2027. All new BT broadband customers are now on Digital Voice — a VoIP service that runs over your broadband connection. If you still make landline calls, add Digital Voice from ~£5/mo. If you don’t use a landline, there’s no reason to include it.

Is a BT broadband and TV bundle worth it?

Run the numbers against what you’re currently paying. If you already subscribe to Netflix, a sport package and one or more other services, a BT TV bundle can consolidate your payments and may save money overall. If you’re not currently paying for any streaming services, the bundle adds monthly cost for content you might not use. The strongest argument for bundling is the single bill and the convenience of one contract — useful if you want to add sport without signing a separate long-term deal elsewhere.

For a detailed comparison of which provider delivers the best broadband speed and reliability for streaming, see our best broadband for streaming UK guide, which covers BT alongside Virgin Media, EE and Sky.

Which BT Package Is Right for You?

For a 1–2 person household

Full Fibre 300 is almost certainly all you need — it’s also BT’s only full fibre entry point now that Full Fibre 150 has been discontinued. At 300Mbps average, it handles simultaneous 4K streaming, video calls and general browsing without any issues, with plenty of headroom to spare. If one of you works from home occasionally, the Stay Fast Guarantee of 150Mbps means you won’t be caught out during peak hours.

For a family of 4 or more

Full Fibre 500 is the one. With 500Mbps shared across multiple devices, everyone can be doing something data-heavy at once without anyone noticing — video calls, cloud syncing and 4K streaming running simultaneously without a hint of slowdown. If your household is more modest — 2-3 people, no heavy simultaneous use — Full Fibre 300 (BT’s entry tier) will genuinely be enough and saves £3/mo.

For a home office or serious gamer

Full Fibre 500 is the recommended starting point, stepping up to Full Fibre 900 if your work involves regular large uploads or downloads, video production, or software development pushing large files to cloud repositories — 900Mbps removes bandwidth from the equation completely. Competitive gamers benefit less from raw speed than from low latency — and BT’s full fibre network delivers good latency figures — but higher speeds do help when you’re downloading large game updates in the background while gaming on another device.

If you’re in an area without full fibre

First, double-check on bt.com — full fibre coverage has expanded significantly and your area may have been connected since you last looked. If full fibre genuinely isn’t available at your address, Fibre Essential gives you 35-36Mbps on BT’s legacy FTTC network for £28.99/mo — only £2/mo cheaper than Full Fibre 300, for a fraction of the speed. It’s worth checking whether another provider has already reached your postcode with full fibre before defaulting to it.

How to Switch to BT — Step by Step

Switching broadband is simpler than most people expect. Here’s the process from start to finish:

1. Check availability: Go to bt.com and enter your postcode to see which packages are available at your address. Full fibre (FTTP) availability varies by street, not just by town.
2. Choose your package: Pick the speed tier that fits your household. If you’re unsure, use the table above or our speed guide for guidance. Note the price rise schedule for March 2027 and 2028 before confirming.
3. Place your order: Complete the sign-up online. You’ll choose a start date — usually 2–3 weeks from the order date. If you have an existing provider, do not cancel them yet.
4. Keep your current broadband live: Leave your existing broadband active until your BT switch date. BT will coordinate the switch using the One Touch Switching (OTS) process — you don’t need to manage two separate cancellations in most cases.
5. Receive your BT Smart Hub: Your router arrives by post a few days before your switch date. Set it up in advance so you’re ready to plug in on the day.
6. Switch day: Your BT service activates on the agreed date. Full fibre switches are usually automatic, though some addresses may require an engineer visit (BT will tell you if this applies when you order). Once active, your old service cancels automatically via OTS.

Frequently Asked Questions About BT Broadband Deals

Disclosure: TheTechVector earns a commission if you sign up via the links on this page. This does not affect the price you pay. Our editorial recommendations are made independently — we are not paid to rank any provider first. Prices shown are as of September 2026 and may change. Always verify the current price on the provider’s website before signing up.

Written by the TheTechVector Team

We research UK broadband, VPN, laptop, and mobile deals so you don’t have to. All prices are checked before publication — if something’s out of date, let us know.