A new interview with Elisabeth Sladen was recently published on Last Broadcast's website. Elisabeth talks about various things in the interview including the possibility for a third series of The Sarah Jane Adventures. A quote from the interview can be viewed below;

Will there be a third series of the show?
They’re writing it now, I believe. I’m very proud of the show, it’ll be lovely to do another series. And it’d be really lovely for the children – not ‘the children’, I mean ‘my co-stars’! Danny [Daniel Anthony who plays Clyde] is 21 now and Anjli [Anjli Mohindra who plays Rani] is 18!

You can view the full interview here. The Sarah Jane Adventures series two is currently airing in the United Kingdom every Monday on BBC One and the CBBC Channel. The series consists of twelve episodes and the first series of Sarah Jane's on screen adventures were recently released on DVD in the United Kingdom and the United States of America.