BT Full Fibre 300 is suitable for busy households that need more bandwidth than entry-level fibre packages. It delivers average download speeds of 300 Mbps with uploads reaching 49 Mbps. That makes it a strong mid-range option for families or shared homes that want fast streaming, responsive gaming, and smooth video calls without worrying about congestion when several devices are active.
BT suggests the plan is suited to homes with 10 connected devices, covering everything from browsing and social media to remote work and online gaming.
| Plan | BT Full Fibre 300 |
| Technology | FTTP (full fibre) |
| Average download speed | 300Mbps |
| Average upload speed | 49Mbps |
| Best for | Busy households; families/shared homes |
| How man devices | up to 10 devices |
| Best for | 4K streaming, responsive gaming, smooth video calls |
| Router | Smart Hub 2 included |
| Optional add-ons | BT Halo (Hybrid Connect backup via EE; enhanced Wi-Fi) |
| Stay Fast Guarantee | Min 150–200Mbps |
As with BT’s other full fibre plans, the package includes the Smart Hub 2 router. You also have the option to add BT Halo features, which bring benefits such as Hybrid Connect backup through EE’s mobile network and stronger Wi-Fi coverage.
On top of that, BT includes a Stay Fast Guarantee. This means they promise a minimum performance threshold — generally around 150–200 Mbps for this tier. If your speed consistently drops below it and the issue cannot be fixed, you can leave the contract early without penalties.
BT Full Fibre 300 – What is on offer?
- £30.99 per month
- Free setup included
- £0 upfront cost
- 24-month contract
- Includes £150 Reward card. Offer ends 11th December 2025.
Pros and Cons
Pros
- Download speeds of 300 Mbps and upload speeds up to 49 Mbps — enough for heavy use across multiple devices.
- No installation or activation charges.
- Good value compared with gigabit plans, offering high speeds without the top-tier cost.
- Stay Fast Guarantee ensures a minimum download speed of 150Mbps.
- Option to add BT Halo or Hybrid Connect for backup connectivity and stronger home Wi-Fi.
- Backed by BT’s extensive customer support and network reliability.
Cons
- Monthly price rises are locked into the contract, with increases in 2026 and 2027.
- Smart Hub 2 does not support Wi-Fi 6, which some competitors now provide.
- Upload speeds, while improved, are still asymmetric compared with symmetrical fibre providers.
- Add-ons such as whole-home Wi-Fi or hybrid backup increase the monthly bill.
- Not yet available everywhere — coverage depends on BT’s full fibre rollout.
Who Is BT Full Fibre 300 Best For?
BT Full Fibre 300 is great for larger or more active households. It’s well suited for:
- Families where several people are streaming, gaming, or video calling at the same time.
- Home workers who need to send or receive large files, or join regular high-quality video meetings.
- Gamers looking for fast downloads of updates and lower latency for online play.
- Homes that want to balance cost against speed — faster than entry-level fibre, but not as expensive as gigabit.
If your household is lighter on usage, a lower BT fibre plan like Full Fibre 150 will do the job for less money. Conversely, if you run a home office with heavy uploads or have multiple 4K streams active constantly, you may prefer a faster package such as Full Fibre 500 or 900.
Home Phone and TV Options
BT’s full fibre broadband packages are broadband only, but you can add a home phone line or TV bundle if you want. For Full Fibre 300, adding a phone service costs around £5 extra per month. The phone element is delivered as a digital line (VoIP), so calls are made through the broadband connection rather than a traditional copper line.
On the TV side, BT now offers EE TV packages. These can be added to any full fibre plan, giving you access to different levels of content depending on what you want:
- Sport – for BT Sport (now TNT Sports) and major live events.
- Entertainment – a mix of popular channels alongside access to apps like Netflix.
- Big Entertainment – more channels and streaming services bundled in, giving a wider choice of shows and films.
- Full Works – the top-tier option with sport, entertainment, and premium extras combined.
Is BT Full Fibre 300 Any Good?
Reports from users and industry reviewers suggest that BT Full Fibre 300 delivers reliable and consistent performance. The full fibre connection avoids the copper bottlenecks of older fibre-to-the-cabinet services, so latency is lower and speeds are more dependable.
The Stay Fast Guarantee gives further assurance. For this package, the minimum guaranteed speed is typically around 150–200 Mbps. If the line consistently fails to meet that threshold, BT has to put it right or let you leave without exit fees.
Independent surveys, including Ofcom’s annual reports, usually show BT performing above average for reliability and customer satisfaction. Users highlight the consistency of the connection and the coverage of BT’s support network. The drawbacks tend to be price-related, with some competitors undercutting BT or offering symmetrical upload speeds.
Compared with rivals, BT often appeals on reliability, brand trust, and extra features like Halo backup. Virgin Media, Hyperoptic, and CityFibre-based providers may beat it on speed or upload performance. But BT remains a safe and broadly available option, especially in areas where alternative networks are not yet live.
Our Verdict
BT Full Fibre 300 offers a well-balanced package for households that need more than basic fibre but don’t want the cost of gigabit. At 300 Mbps down and 49 Mbps up, it comfortably supports busy families, home workers, and online gamers. The Stay Fast Guarantee and Halo options add peace of mind, and the lack of upfront charges is a plus.
The downsides are predictable: built-in price rises, no Wi-Fi 6 router, and asymmetric uploads. If you can live with these limitations, this is a good choice for medium to large households. If your usage is heavier, or you want symmetrical upload speeds, then looking at faster BT tiers or rival fibre providers will make sense.
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Alternatives Worth Considering
- BT Full Fibre 500 or 900 – for households that want faster speeds for heavy streaming, multi-device gaming, and large uploads.
- Virgin Media – in areas where Virgin is available, you can find faster download speeds, although upload speeds remain lower than symmetrical rivals.
- Hyperoptic, Community Fibre, or CityFibre-based providers – often offer symmetrical plans (same upload and download speeds) at competitive prices, though coverage is limited.
- BT Full Fibre 150 – if your home has fewer devices or lighter usage, this cheaper plan could be enough without paying extra.
When comparing, check the small print: how the provider handles price rises, what router is included, whether a speed guarantee is offered, and the availability of customer support extras.
FAQ — BT Full Fibre 300
Q: What upload speed does this plan offer?
Up to 49 Mbps, which is faster than BT’s 150 plan, but still lower than symmetrical providers.
Q: Will I always get 300 Mbps?
Not exactly. Real-world speeds vary depending on network traffic, your local line, and your Wi-Fi setup. Full fibre is more consistent than older copper services, so fluctuations are smaller.
Q: What is the Stay Fast Guarantee?
BT guarantees a minimum performance level — generally 150–200 Mbps for this plan. If speeds fall below that consistently and can’t be fixed, you may be able to leave without penalty.
Q: Do I pay any setup costs?
No. BT Full Fibre 300 includes free setup and installation.
Q: What router is included?
The Smart Hub 2 comes as standard. It’s easy to set up but doesn’t support Wi-Fi 6.
Q: Can I add backup if the fibre line fails?
Yes. With BT Halo and Hybrid Connect, you can switch automatically to EE’s mobile network if your broadband goes down.
Q: Can I take the plan if I move house?
Yes, if your new address has BT full fibre coverage. If it doesn’t, you may need to switch to a different BT package or another provider.