Cheapest O2 SIM only deals
O2 has a variety of SIM only deals available on different contract lengths. If you need something different, O2 are have a range of other SIM only deals available:
What extras do I get with a cheap O2 SIM only deal?
Even on its lower-cost SIM only plans, O2 customers get access to Priority, which offers early gig tickets and weekly treats, plus O2 Open discounts and inclusive roaming in selected destinations.
These perks can add real value, so a slightly pricier O2 SIM may work out better than a bare-bones rival once you factor them in.
Does O2 still let me earn data rewards on a cheap plan?
Yes. O2 Rewards lets you collect extra data, and many plans build in inflation-linked allowance boosts over the contract, so your data can grow even on a budget tariff.
Check whether the deal you're eyeing includes these features before deciding on price alone.
SIM Only Classic
- Price becomes £9.50 on 1 April 2027
SIM Only Classic
- Price becomes £10.50 on 1 April 2027
UNLOCK EXCLUSIVE SAVINGS & DEALS
Join our savvy community and get insider access to the best broadband, power, mobile, and shopping deals – plus expert tips and money-saving guides delivered straight to your inbox.
SIM Only Classic
- Price becomes £11.50 on 1 April 2027
Standard 30 day SIMO
SIM Only Classic
- Price becomes £12.50 on 1 April 2027
SIM Only Classic
- Price becomes £14.50 on 1 April 2027
SIM Only Classic
- Price becomes £16.50 on 1 April 2027
Standard 30 day SIMO
SIM Only Classic
- Price becomes £17.50 on 1 April 2027
SIM Only Classic
- Price becomes £20.50 on 1 April 2027
- Price becomes £23 on 1 April 2028
SIM Only Plus 3GB
- Price becomes £22.49 on 1 April 2027
- Price becomes £24.99 on 1 April 2028
Showing 1 to 10 of 39 results
