30GB
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75% OFF For 3 Months 30GB Monthly Plan £10 £10£2.50 / 30 Days 30GB 4G & 5G Data Unlimited UK minutes Unlimited UK texts 100 International Minutes (from the UK) ...
Dave
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Some more SIM plans available for new customers or additional Sim. Workaround in the OP is mainly for existing O2 customers wanting to avoid £2.50 price hike ...