20 Line Business Mobile Deals | Fleet Pricing UK 2026
Compare The Networks is an OFCOM regulated, independent comparison service helping UK businesses find the best telecoms deals since 2008. We compare 20 line business mobile deals from EE, Vodafone, O2 and Three so you can make an informed decision.
We are rated 4.3 out of 5 on Trustpilot from over 1,000 reviews, and our service is completely free. The networks pay us, not you.
Get a free quote tailored to your business, or keep reading to learn more.
About 20 Line Business Mobile Deals
We compare 20 line business mobile deals from EE, Vodafone, O2 and Three. Whether you are looking for the cheapest option, the best coverage, or specific business features, we will show you what each network offers side by side.
How It Works
- Tell us what your business needs (number of lines, data usage, coverage requirements)
- We compare deals from all four major UK networks
- You choose the best option with no obligation
The entire process takes under 60 seconds to start and is completely free. We are OFCOM regulated and have been helping UK businesses since 2008.
Why Compare?
Most businesses overpay on their mobile contracts by 20 to 35 percent. The main reasons are auto renewed contracts at inflated rates, data plans that do not match actual usage, and hidden charges. Comparing all four networks side by side reveals whether you are getting good value or paying more than you need to.
| What We Check | Why It Matters |
|---|---|
| Coverage at your postcodes | The cheapest deal is useless with poor signal |
| Data vs actual usage | Right sizing prevents overpaying and overage charges |
| Contract terms | Length, price rises, exit fees all affect total cost |
| Multi line discounts | 5+ lines typically save 10 to 25 percent |
| Business features | Fleet management, MDM, roaming, support levels |
Frequently Asked Questions
How much do 20 business mobile lines cost?
20 SIM only lines with unlimited data start from around approximately £11+VAT per month total (approximately £11+VAT per line) on Three. EE costs around approximately £11+VAT per month for 20 unlimited lines. At 20 lines you qualify for the deepest volume discounts, typically 15 to 25 percent below individual line pricing.
Do I get a dedicated account manager with 20 lines?
Yes. All major networks assign a dedicated account manager for accounts with 20 or more lines. Your account manager handles onboarding, number porting, technical issues, and contract renewals. Compare The Networks also provides ongoing support throughout your contract.
Can I roll out 20 lines in stages?
Yes. Staggered rollout is standard for larger orders. You can deploy lines in batches for example, 10 lines in week one and 10 in week two to minimise business disruption. All lines still qualify for the 20-line volume discount from day one.
What is MDM and do I need it for 20 lines?
MDM stands for Mobile Device Management. It lets you remotely configure, secure, and manage all 20 devices from a central dashboard. You can enforce security policies, push app updates, remotely wipe lost devices, and control data usage. For 20 lines we strongly recommend MDM most networks offer it as part of their business packages or as an affordable add-on.
What is the annual price increase on 20 line deals?
All networks apply a fixed approximately £11+VAT plus VAT per month per line increase each April. On a 20 line deal, that is approximately £11+VAT plus VAT per month added from the April after your contract starts. This is a set amount, not a percentage.
Can I mix different plans across my 20 lines?
Yes. You can mix SIM only and handset lines, different data allowances, and even different networks in some cases. For example, field staff might need EE for rural coverage while office staff use Three for the best value. We design the optimal mix for your business.