O2 is a UK mobile network and telecoms provider that sells pay monthly and pay as you go SIMs, mobile phones, tablets, smartwatches and mobile broadband. It also offers home broadband in some areas, plus add-ons such as extra data, international roaming options and device insurance.

Deals on o2.co.uk often include handset and SIM plan promotions, limited-time discounts on selected phones, and bundles that add extra data or include subscriptions. You may also see trade-in offers that reduce the cost of an upgrade, and occasional voucher codes tied to specific products or tariffs.

O2 has a network of high street shops as well as online ordering, with options for delivery or click and collect depending on the item. It also runs the Priority rewards scheme for customers, which can include partner offers and early access to tickets.