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Connectivity guide

Leased line vs full fibre: which does your business need?

Full fibre broadband has narrowed the gap with leased lines, but they are still different products. Here is how to choose.

By the Alltone Telecoms team. Updated 24 October 2026. About 2 minutes to read.

Side by side

Full fibre (FTTP)Leased line
BandwidthShared with other usersDedicated to you
UploadUsually lower than downloadSame as download
Fault fixBest efforts or enhanced careSLA with fix times
Install timeDays to weeksTypically weeks to months
CostLowerHigher

Choose broadband when

  • You have fewer than about 20 users
  • Most work is browsing, email and cloud apps
  • You can tolerate occasional slowdowns
  • You add a 4G backup for resilience

Choose a leased line when

  • Downtime costs you real money
  • You upload large files or run video all day
  • You host services or run a contact centre
  • You need guaranteed bandwidth

Common questions

Something else on your mind? Call 020 7112 8558 or send us a message and a telecoms specialist will reply.

Can I have both?

Yes. A leased line with broadband as backup, or two diverse leased lines, is a common resilient setup.

Talk to a telecoms specialist

Tell us how your business takes calls today and we will recommend a setup, with a clear monthly price. Most quotes are ready the same day.

  • UK-based support team
  • Free setup and number porting on most plans
  • Monthly rolling options available
  • No obligation quote

Prefer to talk? Call 020 7112 8558, Monday to Friday, 9am to 5.30pm.

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