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BROADBAND · BROADBAND SPEED GUARANTEES EXPLAINED

Broadband Speed Guarantees Explained

Understanding advertised broadband speeds and your rights if speeds fall short.

1 min read·Last reviewed 15 February 2026·Reviewed by Switch4Good editorial

Quick summary

  • Advertised speeds are averages
  • Minimum guaranteed speeds must be disclosed
  • You can exit contracts if speeds consistently fall below minimum
  • WiFi speed differs from line speed

For information only

Understanding advertised broadband speeds and your rights if speeds fall short. Broadband providers advertise average speeds, but performance can vary. This guide explains speed guarantees and remedies.

Average vs Minimum Speeds

Providers must advertise average speeds at peak times and disclose a minimum guaranteed speed for your line.

Line Speed vs WiFi Speed

Speed guarantees usually apply to the line entering your home — not WiFi performance.

When Speeds Fall Short

If speeds fall below minimum guaranteed levels:

  • Report issue
  • Allow provider time to fix
  • Exit penalty-free if unresolved

Factors Affecting Speed

  • Distance from cabinet
  • Internal wiring
  • Router quality
  • Network congestion

Ofcom’s Voluntary Code

Many providers follow Ofcom’s Broadband Speeds Code of Practice.

Key takeaways

  • ‚Ä¢ Check your minimum guaranteed speed
  • ‚Ä¢ Speed tests should be done via wired connection
  • ‚Ä¢ You may leave contract if minimum not met
  • ‚Ä¢ Router placement affects WiFi performance
Are advertised speeds guaranteed?

No ‚they are averages, but minimum speeds must be disclosed.

Can I cancel if speeds are slow?

Yes, if below guaranteed minimum and unresolved.

Does WiFi speed count?

Usually no, line speed is what is guaranteed.

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