It says in the product description that the credit on the Flat12 tariff never expires. Is this true of the £30 starter top-up? I ask this because on the 3 website the T's & C's for the Flat12 tariff contain:
"New customers who have purchased a handset or a SIM only with a built in Starter Top-up will need to use their Starter Top-up within 60 days of activation (activation occurs at the first chargeable usage event). Any unused credit remaining after 60 days will expire."