It says this on the website and when I asked about it they did tell me it was for 18 months.
Introducing the UK's best value monthly tariff for £8.50 a month
Say hello to a brand new phone, plus 100 minutes AND 100 texts, every single month. It doesn't get much better than that!
This tariff is only available on an 18 month contract.
http://www.virginmobile.com/vm/gener...aymonthlydeals