This page contains the best O2 discount code curated by the Codes.Discount UK team. Our goal is to save you money when you shop at O2.
Discover how you can claim your complimentary Samsung Galaxy Buds 3 Pro when you choose a qualifying plan with O2. This exclusive offer lets you enjoy premium sound without the extra cost, perfect for enhancing your mobile experience. Don't miss out on this fantastic deal to get the latest tech for free.
Save £100 on your chosen purchase with this exclusive O2 promo code. Simply apply it at checkout for instant savings on a fantastic range of products. Don't miss this great opportunity to get the tech you want for less.
Save £4 on your next shop with this exclusive O2 discount code – simply enter the voucher at checkout for instant savings. This limited-time offer lets you pocket extra cash on essentials or treats, so don’t miss out. Grab your code now and enjoy a fiver off while stocks last, perfect for savvy shoppers looking to stretch their budget further. Terms apply, so use it before it’s gone!
Best discount codes are not taking effect? Try these popular promo codes at O2 and don’t miss these incredible opportunities!
Save £100 on your next O2 purchase with this exclusive discount code – simply apply it at checkout for instant savings. Grab this limited-time deal to enjoy top-notch mobile plans or devices while keeping more cash in your pocket. Don’t miss out on this brilliant offer to slash your bill or upgrade your tech for less. Use the code now before it expires!
Save 6% on handpicked O2 products with this exclusive voucher code – simply apply at checkout for instant savings on your next purchase. This limited-time offer helps you get more for less on selected items, so don't miss out on these great deals. Grab your discount now before it's gone!
Unlock 50% off your Samsung handset with this exclusive O2 discount code. Whether upgrading or switching, enjoy significant savings on a wide range of Samsung models. Simply apply the code at checkout to make the most of this limited-time offer and get your new phone for half the price.
Unlock 30% off on power accessories with this exclusive O2 discount code, available when you purchase any Samsung handset. Whether you're upgrading your device or simply need some new accessories, this offer lets you save while ensuring your Samsung experience is fully powered. Don't miss out on this deal!
We understand that it's not always possible to find a working discount code, so we've also curated the latest deals and current holiday sales from O2 that no code needed. In addition, we've listed some expired O2 voucher codes that might still save you money. Trying these codes may take more time, and many invalid codes might be frustrating. Nevertheless, it's still worth a try, because you never know if you might get lucky today.
Unlock a fantastic £15 Amazon gift card when you join O2 with a new Sim only contract priced at just £9.99 or less—this exclusive offer is available for new customers only, so don't miss out on this brilliant deal to enjoy great value and a welcome bonus.
Enjoy a £15 voucher when you purchase a 50GB 12-month SIM plan with O2. Stay connected with generous data and exclusive savings, offering great value on your mobile plan. This limited-time offer lets you make the most of your 50GB data and receive a handy £15 voucher.
Discover unlimited data plans from O2 for just £23.99 a month, giving you total freedom to stream, browse and connect without any worries. Stay online with the UK's reliable network and enjoy great value with no hidden fees. Get your perfect plan today!
Unlock exclusive savings with O2 Rewards and get 10% cashback on your payments, a fantastic offer just for you.
Get a free £10 voucher when you purchase a 30GB 12-month SIM plan with O2. Enjoy reliable, fast mobile data and excellent coverage, plus the added bonus of a £10 voucher to spend on accessories or top-ups. A perfect deal for those seeking value and flexibility.
Save up to 25% on your O2 airtime plan with this exclusive NHS discount, making your monthly mobile bill more affordable while you do your vital work.
Unlock incredible savings on the Galaxy S25 Ultra with O2, where you could pocket up to £715 off. This is your chance to upgrade to Samsung's latest flagship phone for far less. Grab this exclusive deal now and experience cutting-edge technology at a truly outstanding price.
Unlock exclusive savings with up to 25% off your O2 Airtime Plan as a Sainsbury's employee. This special offer makes staying connected more affordable while you work.
Download the O2 app today and discover exclusive savings, including an extra £70 off on premium like-new mobile phones.
Don't miss out on this incredible offer from O2—save a massive £560 on the brand new Galaxy Z Flip7 FE! This is your chance to grab the latest foldable phone at an unbeatable price.
Download the free O2 Priority app to unlock exclusive discounts and enjoy up to half off your purchases, making every order more affordable.
Teachers can enjoy a generous 25% discount on O2 airtime plans, making it easier to stay connected without stretching your budget. This exclusive offer helps educators save significantly on their monthly mobile costs. Discover how to claim your teacher discount and start saving with O2 today.
There are currently 60 discount codes & deals available.
The most active O2 discount code today is 25BUDS3PRO.
The best O2 discount today is up to 15% Off.
To redeem a discount code, simply enter the code in the Promo Code Input Box provided. The code will be automatically applied to your order.
Yes. Free standard delivery is usually available when your order meets a minimum purchase threshold (often around £75 to £125). During major sales events (such as Black Friday or Cyber Monday), free delivery may be available with no or lower minimum requirements. Please check O2 current free delivery terms.
Absolutely. Hot deals and clearance sales usually do not require codes.
Yes, O2 does run sales during holidays and major shopping events throughout the year. Such as Black Friday, Cyber Monday, New Year Sales, Easter Sales, Summer Sales etc.
Combine newsletter signup (for welcome codes), check clearance/flash sales regularly, and apply the best O2 discount code. Always verify on O2 as deals change frequently!
