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  • O2 Free Sim
25p Cashback
O2 are offering free SIM cards as a quick, easy and free way to join O2 as a Pay & Go customer. You can order up to 2 SIM cards.
Get 25p cashback per SIM ordered - up to 2 SIM cards only. Please note: O2 report in batches so cashback can take a bit longer to show in your account.