OFFICIAL O2 CLASSIC sim cards, LAST FEW REMAINING, END OF TARIFF, DON'T MISS OUT

O2's Classic sim tariff is ending, but we still have a few remaining - DON'T MISS OUT. This is the last tariff available on which your remaining credit does not expire until you've used it. O2 require a minimum £10 top up in any 6 month period, but ALL unused credit remains on the sim and does not expire.

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