Canceling sim only 30 day rolling contract
 

Thinking of using Virgin's sim only £10.00 Pay Monthly contract. It says its on a 30 day rolling contract and "just give 30 days notice if you want to change your tariff". Can anybody point me to the T&C, I've not managed to find them yet re actually canceling the contract if and when I need to...I would presume I just give 30 days notice but would like to know for sure