The Ultimate Guide to CityFibre for UK Businesses

What Is CityFibre?

CityFibre is a wholesale full-fibre network operator, meaning it builds and maintains the physical fibre infrastructure but sells access to internet service providers (ISPs) rather than directly to end customers. When your ISP delivers service over CityFibre, they are leasing capacity on CityFibre's ducts and cables — the glass fibre reaching your building.

The company was founded in 2011 and has since become the UK's largest alternative full-fibre network to Openreach. Its coverage footprint prioritises cities and large towns where high-density commercial demand justifies the civil engineering investment. If your business is in one of CityFibre's network cities, you will likely find your ISP already has access — or is planning access — to this infrastructure.

Where Does CityFibre Operate?

As of 2025, CityFibre's network is active or under build in over 285 UK locations. Major cities with well-established CityFibre coverage include:

• Glasgow, Edinburgh, and Aberdeen
• Manchester, Leeds, Bradford, and Sheffield
• Birmingham, Coventry, and Wolverhampton
• Bristol, Exeter, and Plymouth
• Cardiff and Newport
• Milton Keynes, Peterborough, and Norwich
• Multiple London boroughs

Coverage within each city is not always comprehensive on day one — CityFibre builds area by area. The best way to check if your specific postcode is served is to use an availability checker, which compares live CityFibre build data against your address.

CityFibre for Business: What Products Are Available?

Full-Fibre Broadband (FTTP)

For smaller businesses and offices, CityFibre-delivered FTTP broadband provides speeds from 100Mbps to 1Gbps. Unlike FTTC (fibre to the cabinet), CityFibre runs fibre all the way to your premises — there is no copper final mile that limits speed or degrades signal quality over distance. Typical business FTTP pricing on CityFibre infrastructure runs from around £30 to £80 per month depending on speed and provider.

Ethernet and Leased Lines

For larger organisations requiring dedicated, uncontended bandwidth with SLA protection, CityFibre also supports Ethernet leased line products. ISPs can provision dedicated Ethernet circuits over CityFibre's infrastructure in supported cities. Pricing is competitive relative to Openreach-based leased lines in the same areas, typically ranging from £200 to £500 per month for a 100Mbps dedicated circuit.

Gigabit Broadband

CityFibre's Gigabit City programme is one of the company's flagship commercial pushes. Businesses on covered streets can access genuine 1Gbps symmetrical or near-symmetrical services through participating ISPs. For bandwidth-intensive operations — media production, large-scale cloud backup, multi-site video — this tier removes the ceiling entirely.

CityFibre vs Openreach: Key Differences

Both CityFibre and Openreach (BT's network infrastructure arm) operate as wholesale providers. The differences matter when you are choosing which network to use:

• Coverage: Openreach has a vastly larger national footprint, reaching rural areas CityFibre does not serve. CityFibre is focused on profitable urban and suburban locations.
• Network age: CityFibre builds new infrastructure rather than upgrading copper. In areas where both exist, CityFibre's network tends to be newer and engineered for higher capacity from the outset.
• ISP choice: Openreach supports a wider range of ISPs. CityFibre-based products are available through providers including Vodafone, TalkTalk, Giganet, and a growing number of regional ISPs.
• Pricing: In cities where both networks operate, competition between them typically keeps pricing sharper than in areas with only one provider.

How to Get Connected to CityFibre

You do not contact CityFibre directly as a business customer — you buy through an ISP. The process works as follows:

1. Check your postcode for CityFibre availability using your ISP's or a broker's checker.
2. Choose an ISP that offers CityFibre-delivered products in your area.
3. Select your speed tier and contract term (typically 24 or 36 months for business products).
4. An engineer will attend your premises to complete the fibre installation, usually within 10–20 working days of order in covered areas.

AMVIA can check CityFibre availability at your postcode alongside Openreach and Virgin Media infrastructure simultaneously, giving you a clear picture of what is genuinely available before you commit to a provider.

Is CityFibre Right for Your Business?

If your premises sits within a CityFibre coverage area, it is worth including in your comparison. The infrastructure quality is comparable to Openreach's newer FTTP builds, and competition with Openreach in the same street often means better pricing and faster installation times than a sole-provider area would deliver.

For businesses currently on FTTC broadband that are within a CityFibre coverage zone, upgrading to FTTP over CityFibre is one of the most cost-effective ways to materially improve connection quality and future-proof the line against growing bandwidth demands.