Data is 30 pence for each day that you use it, unlimited. Virgin's definition of "unlimited" means up to 25 megabytes (after which there's a steep per-megabyte charge). Or, for £5 from your PAYE balance, you can buy their Mobile Internet Bundle.
Unlimited use is within the UK and is for your personal, non-commercial use only. It doesn’t include making internet phone or video calls, peer to peer file sharing, using your phone as a modem, or while you are abroad and any of these uses will be charged at the per MB data rate for your tariff outlined in our Tariff Table.