Pre-Christmas delivery: Order by 19 December for Highlands and Islands. Order by 23 December for Mainland UK.

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Explore our SIM deals

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Pay Monthly SIMs

Keep the phone you love and get all the data you need. Take your pick from our 12 and 24-month Pay Monthly SIM Only deals.

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More data, same price

Enjoy more data for up to three months at no extra cost, with selected Pay As You Go SIMs. Already with O2? Text MORE to 2424.

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Latest Pay Monthly offers

100GB Plus Plan – £17.99

Christmas 24-month deal. £17.99 a month. 24 months. £20.49 April ’26, £22.99 April ’27. Ends 7 Jan.

Shop festive deal

Unlimited Plus Plan – £23.99

Bag a great low price in our Christmas Sale. £23.99 a month. 24 months. £25.49 April ’26, 27.99 April ’27.

Grab this offer

12GB Classic Plan - £15

Get yours at a price you’ll love. £15 a month. 24 months. £17.50 April ’26, £20 April ’27. Ends 7 Jan.

Treat yourself

Pay As You Go SIMs

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Big Bundles

Enjoy awesome perks and great-value tariffs with unlimited minutes and texts

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Rolling plans

The easiest way to pay without a contract

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Need to top up?

Find out how to top up your Pay As You Go devices

See your options

Perks for being with O2

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Data rollover

Didn’t get through all your data? Let’s keep it rolling.

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Roam freely in the EU

Unlike other major networks, we don't charge extra for EU roaming, up to 25GB

Get on board

Priority

Jump into a world of exclusive rewards and experiences. It’s our way of saying thanks for being with us.

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Looking for another SIM?

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Tablet SIMs

Pick a SIM for your tablet or dongle

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Smartwatch eSIMs

Connect your cellular smartwatch with a Pay Monthly eSIM

See smartwatch eSIMs

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Mobile broadband SIMs

Stay connected while you’re on the move

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