5G for Business: Is 5G Ready to Replace Your Fixed Broadband?

What Does 5G Offer Businesses?

5G is the fifth generation of mobile network technology, delivering significantly faster data speeds, lower latency and higher capacity than 4G. In optimal conditions — strong signal, modern 5G infrastructure, uncongested network — 5G can deliver speeds of 400Mbps to 1Gbps download and 50-200Mbps upload. These are broadband-class figures.

For businesses, the practical appeal of 5G is the absence of a physical installation. A 5G router placed near a window connects to the mobile network without cables, without a telecoms engineer visit, and can be operational within hours of ordering. This makes 5G attractive for temporary locations, event venues, construction sites, businesses waiting for a fixed line to be installed, and premises where a physical connection is difficult to arrange.

5G Performance in Practice

The headline speeds cited for 5G are achieved under optimal conditions. In practice, UK 5G performance in 2025/2026 is more variable:

• Urban areas with strong 5G coverage: 200-600Mbps download is achievable during off-peak hours
• Same areas during peak usage (commuting hours, lunch): Speeds can drop to 50-150Mbps as network capacity is shared across users
• Buildings with thick walls or poor signal penetration: Speeds inside can be significantly lower than the outdoor signal level suggests
• Areas with 5G coverage but legacy infrastructure: Some early 5G deployments sit on 3.4GHz or 3.5GHz spectrum, which has better building penetration. Millimetre wave (mmWave) 5G is faster but has very limited indoor range.

Upload speeds are a particular variable. While 5G can deliver strong upload in good conditions, consistency is not comparable to a fixed FTTP or leased line connection.

5G Availability in the UK

UK 5G coverage varies considerably by operator and location. As of early 2026:

• EE, O2, Vodafone and Three all offer 5G coverage across most major UK cities and towns
• Coverage in smaller towns and rural areas remains patchy — 4G is often the fallback
• Indoor coverage in buildings with significant shielding can be unreliable on all operators

Coverage maps provided by operators show outdoor signal strength and are not a reliable indicator of indoor performance at a specific building. A site assessment or trial period is the most reliable way to evaluate 5G performance at your premises.

5G Business Products

All four major UK mobile operators offer 5G-capable SIM products and dedicated fixed wireless access (FWA) devices designed for business premises. Key products in the market:

• EE Business 5G Hub: Fixed router with 5G SIM, designed for office use
• Vodafone GigaCube: 4G/5G compatible fixed router
• Three HomeFi: Unlimited data 5G router, popular for supplementary office connectivity
• O2 Business 5G: Various device options with business-grade data plans

Monthly costs for business 5G data plans with suitable hardware typically run £40-£80/month — comparable to FTTP broadband pricing.

When to Use 5G for Business

5G is appropriate as a primary connection in specific circumstances:

• Temporary or short-term premises where fixed line installation is not justified
• Construction sites, event venues and mobile operations
• Premises where a fixed line is awaited — 5G bridges the gap until FTTP or a leased line is installed

5G as a secondary or failover connection alongside a fixed primary circuit is a strong use case — providing backup during fixed line outages at relatively low cost.

When Fixed Broadband Remains Better

For the majority of UK businesses with a permanent premises, fixed broadband (FTTP) or a leased line remains more appropriate than 5G as a primary connection:

• Fixed connections deliver more consistent speeds regardless of network congestion
• FTTP and leased lines come with formal SLAs; 5G does not
• Upload speeds on fixed connections are more consistent and predictable
• Latency on fixed connections is typically lower, benefiting VoIP quality