We know that choosing the right leased line speed is crucial to ensure your business operations run smoothly, so in our business internet speed guide, we’ll walk you through a full leased line speed comparison UK for 2025, helping you decide between 100Mbps, 500Mbps, 1Gbps, or even 10Gbps.
Why Speed Matters More Than Ever
The way businesses use the internet has evolved. In 2025, your leased line needs to support:
- Cloud-based applications
- VoIP phone systems
- Video conferencing
- Remote access for hybrid teams
- Data-heavy applications like AI, IoT, and big data
A sluggish or unreliable connection means lost productivity, unhappy clients, and frustrated employees.
Business Leased Line Speed Options Explained
| Speed | Best For | Typical Users |
|---|---|---|
| 100Mbps | Basic cloud use, occasional video calls | Micro businesses (1-10 staff) |
| 500Mbps | Regular large file transfers, CRM systems | SMEs (10-50 staff) |
| 1Gbps | Heavy cloud usage, frequent video calls | Medium to large businesses (50-200 staff) |
| 10Gbps | High-frequency trading, data centres, IoT-heavy businesses | Enterprises (200+ staff) |
Factors to Consider When Choosing Leased Line Speed
1. Number of Users
More users = higher bandwidth needs.
Allow around 10-20Mbps per user as a rough guideline.
2. Types of Applications
Cloud storage? Video meetings? Real-time CRM platforms?
The more data-heavy your tools, the higher the required speed.
3. Growth Plans
Don’t just plan for today; choose a scalable connection that can easily upgrade as your business grows.
4. Redundancy and Resilience
Critical services may require a second, backup line to guarantee uptime.
5. Budget
Higher speeds cost more — but downtime and slow speeds are even more expensive in lost productivity.
Leased Line Speed Comparison: Costs and Providers (2025)
| Provider | 100Mbps Price | 500Mbps Price | 1Gbps Price | 10Gbps Price | Notes |
| From £399 | From £450 | From £500 | From £2,800 | Wide UK coverage, strong SLAs |
 | From £450 | From £500 | From £550 | From £2,750 | Best in urban areas |
| From £400 | From £450 | From £500 | From £2,700 | Good security features |
| From £300 | From £350 | From £400 | From £2,500 | SME-friendly pricing |
| Varies | Varies | Varies | Varies | Available in select UK cities |
| From £349 | From £380 | From £400 | Custom quote | London-focused, fast installs |
Business Internet Speed Guide: Practical Examples
Small Design Agency (5-10 employees)
- Daily cloud use, collaborative tools (e.g., Adobe Cloud, Canva, Figma)
- Recommended Speed: 100-500Mbps
Growing Tech Start-up (25 employees)
- Heavy SaaS usage, video conferencing, remote team access
- Recommended Speed: 500Mbps-1Gbps
E-commerce Company (100+ employees)
- Real-time CRM, website hosting, large image uploads
- Recommended Speed: 1Gbps
Large Enterprise or Data Centre
- Hosting applications, handling IoT devices, large-scale backups
- Recommended Speed: 10Gbps
How to Future-Proof Your Business Internet
- Choose a scalable provider: Ensure easy bandwidth upgrades mid-contract.
- Consider hybrid and remote working: More remote users can mean additional bandwidth needs.
- Plan for IoT growth: Connected devices can consume significant bandwidth.
- Include a backup line or 4G failover: Resilience is key in 2025.
Conclusion About How to Choose the Right Leased Line Speed
Choosing the best leased line speed for your business in 2025 is not just about picking the fastest option — it’s about aligning your internet performance with your day-to-day operations, future growth plans, and digital transformation goals.
Using our leased line speed comparison UK and practical business internet speed guide, SMEs and large enterprises alike can make smarter, future-proof choices.
When in doubt, it’s better to choose slightly more bandwidth than you need today — the costs of upgrading later can be higher than planning ahead now.