Virgin Mobile's Sim only deal is designed for people who are happy with the handset they currently own. The Liberty Sim tariff lets you keep your old number and you can cancel the deal at just 30 days notice, so you're not tied into a lengthy contract.
There are currently six Liberty Sim deals available and the Sim card is free with each of them:
Virgin £15 Talk (£15 a month) gives you 300 minutes and 300 texts.
Virgin £15 Text (£15 a month) gives you 150 minutes and 1000 texts.
Virgin £20 Talk (£20 a month) gives you 450 minutes and 450 texts.
Virgin £20 Text (£20 a month) gives you 300 minutes and 2000 texts.
Virgin £25 Talk (£25 a month) gives you 600 minutes and 600 texts.
Virgin £30 Talk (£30 a month) gives you 750 minutes and 750 texts.
Users also get free itemised billing and free voicemail in the UK.