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Business MobilesO2, Vodafone & EE airtimeSIM Only DealsFlexible 30-day & 24-monthMobile Broadband4G / 5G data-only SIMsStatic IP SIMsFixed IP for IoT & failovertelecoms
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Business SIM Only Deals
Flexible SIM-only tariffs for handsets you already own — unlimited calls and texts, 5G data and eSIM, on 30-day rolling or 24-month terms.
Keep your handsets — just switch the SIM
SIM only means you keep the phones you already have and simply pop in a new SIM (or activate an eSIM) for a better plan. There's no expensive handset cost baked into your bill, so SIM only is usually the most cost-effective way to run business mobiles.
Choose a 30-day rolling term for maximum flexibility, or commit to 24 months for the lowest monthly price. Every tariff includes unlimited UK calls and texts — you just pick the data allowance and network that suit each user.
- No handset cost — cheaper monthly line rental
- 30-day rolling or 24-month terms
- Unlimited UK minutes & texts
- Instant eSIM or next-day physical SIM
› how our plans compare
Individual or shared — pick the model that fits
Single user
One allowance per SIM — unlimited UK calls and texts with your chosen data. Simple and the most popular choice for most staff.
Premium
Everything in Single, plus larger or unlimited data, inclusive EU roaming across 48+ countries, priority 5G and better out-of-bundle rates.
Aggregated
All SIMs draw from one shared data pool. Heavy and light users balance out, so there's no wasted allowance and no bill shock.
In our pricing below, Single & Premium appear together as per-user 'Individual plans' (higher tiers are Premium); 'Aggregated' is shown as shared data pools.
› individual sim only · per user
Individual SIM only plans (Single & Premium)
One allowance per user with unlimited UK minutes and texts, on 24-month or 30-day terms. Higher tiers (50GB+) are Premium — extra roaming and priority 5G.
Prices ex VAT · 24-month term · Unlimited UK minutes & texts on every tier.. Buy now shown as a no-obligation enquiry.
› choose your network
O2, Vodafone or EE — we'll help you choose
Different networks shine in different places. We compare coverage and value for your postcodes and can even mix networks on one account.
Great value & strong urban coverage
Excellent coverage across UK towns and cities with reliable 5G in built-up areas. Our best-value network for most business users.
Widest 5G footprint & inclusive EU roaming
One of the UK's largest 5G networks with strong data performance and inclusive EU roaming. Ideal where fast mobile data is business-critical.
Award-winning speed & rural reach
Consistently rated the UK's fastest and most reliable network, with the broadest rural coverage. The premium choice for field and remote teams.
› coverage & restrictions
Where your SIM works — and the small print
United Kingdom
Full 4G and 5G coverage on O2, Vodafone and EE across the UK, including unlimited UK minutes and texts on all voice plans.
EU & EEA roaming
Use your allowance in 48+ European destinations at no extra cost on Professional and Unlimited plans, subject to a fair-use data cap (typically 25GB/month).
Rest of world
Travelling further afield? Add a global roaming pass from £6/day covering 100+ countries across the Americas, Asia, Africa and Oceania.
Inclusive EU & EEA roaming destinations
Included on Professional & Unlimited plans (fair-use data cap applies). Other plans can add roaming from £2/day.
Fair use & restrictions
- Unlimited data is subject to a Fair Usage Policy (around 500GB/month of UK data).
- Roaming data on unlimited plans is capped at approximately 25GB/month in Europe.
- Data-only SIMs bar voice calls and premium-rate / age-restricted services by default.
- 30-day rolling plans can be cancelled with 30 days' notice; 24-month plans carry an early-termination fee.
- 5G access depends on a compatible device and local network coverage.
- eSIM requires a compatible, network-unlocked device.
- Out-of-bundle UK data is charged per GB; we set usage alerts to avoid surprises.
› options explained
The right option for every use case
Single-user SIM
One SIM, one user — unlimited calls and texts with your chosen data. The simplest, most popular option.
- Unlimited UK minutes & texts
- 2GB to unlimited data
- eSIM or physical
- 30-day or 24-month
Aggregated SIM
Great for teams — individual data allowances that draw from a shared pool so no one runs dry.
- Per-user allowance + shared pool
- Balances heavy/light users
- Unlimited calls & texts
- Simple per-line management
› esim ready
Every plan is eSIM-ready
An eSIM (embedded SIM) is a digital SIM built into your device — no plastic card required. Activate a new line by scanning a QR code and you're live in minutes. Every CLI Secure plan is available as an eSIM on O2, Vodafone and EE, at no extra cost.
Instant activation
Scan a QR code and your line is live in minutes — perfect for new starters, replacements or urgent deployments.
Dual SIM flexibility
Run a business and personal number on one handset, or keep two networks active for resilience while travelling.
More secure
An eSIM can't be physically removed or swapped by a thief, making lost or stolen devices harder to misuse.
Built for travel & IoT
Switch network profiles remotely and add local data abroad — ideal for global travellers and connected devices.
› why cli secure
Business mobile, done properly
Lower monthly cost
No handset finance in your bill means SIM only is the cheapest way to run business mobile lines.
Flexible terms
Pick 30-day rolling for freedom or 24-month for the best price — your choice, per line.
Unlimited calls & texts
Every SIM-only tariff includes unlimited UK minutes and texts as standard.
5G & eSIM
Fast 5G and instant eSIM activation included on every capable plan and device.
Keep your numbers
We port existing numbers with zero downtime when you switch to us.
One UK-managed bill
All your SIMs and networks on a single consolidated bill with UK support.
› get a quote
Get a tailored sim only quote
Tell us what you need and we'll compare O2, Vodafone and EE to send your best-value options — usually within one working day. No obligation.
- We compare all three networks
- eSIM or physical SIM — your choice
- Zero-downtime number porting
- One simple, UK-managed bill
› faq
SIM Only, answered
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› let's talk
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