O2 Business Mobile SIM 25GB
25GB Business SIM Only
Great value business SIM only deals that beat the market, our O2 mobile SIM Only packages offer flexibility and maximum savings.
-
Usage Allowance
25GB data
Unlimited UK calls
Unlimited UK SMS
-
Extras
Free EU roaming
Upgrade your plan any time
Spending cap
Was £20.00 | SAVE £156.00*
£13
.50per month
24 month contract | Prices ex. VAT
£13.50 per month, increasing to £15.00 from 1st of April 2026
Additional contract terms are available, please contact our Customer Service team on [email protected] or 0800 040 8888.
Physical SIM Card
When you choose our service, you’ll receive a physical SIM card, securely packaged and delivered straight to your premises. If you’re already with another mobile provider, we’ve made switching straightforward - you have two simple options: keep your current number, or start fresh.
If your device requires an eSIM contact us on 0800 040 8888 or [email protected]
- Device portability: use the SIM in any compatible device (tablet, router, phone)
- Reliability: physical SIMs are tried and tested with stable performance
- Flexible onboarding: insert the SIM, power on, and you’re live in minutes
- To keep your number (PAC)
1. Text PAC to 65075 to request your Porting Authorisation Code.
2. You’ll receive an SMS with your PAC code (valid for 30 days), plus any early termination charges or pay-as-you-go balance.
3. Provide this PAC code to us when activating your new SIM - we’ll arrange the port and migrate your number in one working day
New customers paying by Direct Debit only. Inclusive minutes do not include calls to Lyca, Lebara or any mobile virtual network operator based outside the UK GSM cellular networks. Saving values calculated against Daisy RRP pricing. All prices exclude VAT at 20%. Additional contract terms are available please call 0808 304 3822 for details.
Why Daisy
The UK’s largest independent provider of tailored business broadband, broadband and phone bundles, and SIM only deals crafted for micro SME and small businesses.
Dependable connectivity, flexible plans, and pricing built for your size.
Dependable connectivity, flexible plans, and pricing built for your size.
Support
We pride ourselves on our friendly UK-based customer service.
Experience
From small beginnings, we’ve now got over 25 years experience.
Scale
We look after c. 185,000 businesses across the UK.
