O2 discount codes and voucher codes
Every O2 discount code, voucher code, coupon and no-code deal we can verify, listed with expiry dates and full terms. O2 sits in our all brands line-up, and you can stack a code with tuck. cashback on a O2 gift card.
Offers last checked: 2026-10-24
O2 deals, no code needed
- £15 Gift Card with 50GB SIM Only Contracts for £8 at O2 - Valid for New Customers Only - expires 31 Oct 2026
- £25 Gift Card with 120GB SIM Only Packages for £10 at O2 - Valid for New Customers Only - expires 31 Oct 2026
- £65 Gift Card with All Pay Monthly Handset Contracts at O2 - Valid for New Customers Only - expires 31 Oct 2026
- £55 Gift Card with Wearables Purchases at O2 - Valid for New Customers Only - expires 31 Oct 2026
- 20% Student Discount at O2
- 10GB 30 Day Tariff from Under £10 at O2 - expires 31 Oct 2026
- 120GB 30 Day Tariff from Under £15 at O2 - expires 31 Oct 2026
- 20% off SIM Only Airtime Plans with Multisave at O2
- iPhone 18 Pro Unlimited Plan from £59 a Month plus £30 Upfront Cost at O2
How to use a O2 voucher code
- Copy the O2 discount code from the offer above.
- Open O2 and add the items you want to your basket.
- Paste the code into the promo, voucher or discount box at the O2 checkout before you pay.
- Confirm the saving is applied to your total, then place the order. Pay with a tuck. O2 gift card to earn cashback on top.
O2 cashback as well as codes
A O2 code lowers what you pay at the checkout, and tuck. cashback comes back to you on top. Buy a O2 gift card in the tuck. app, earn instant cashback on it, then pay with that gift card and still enter a valid O2 code.
O2 discount code questions
Are these O2 discount codes free to use?
Yes. Every O2 code, coupon and deal listed here is free to view and use, with no sign-up and no membership fee.
Why did my O2 code not work?
Most O2 codes carry conditions: a minimum spend, selected lines only, new customers only, or one use per account. Check the terms under the offer and make sure the expiry date has not passed.
How often are O2 codes updated?
We recheck O2 offers regularly and show when the page was last checked, so you can see how fresh the savings are.
Can I use a O2 discount code and earn cashback?
Usually yes. Buy a O2 gift card in the tuck. app to earn cashback, pay with that gift card and enter a valid O2 code at the checkout.
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