Possibly really daft question..?

Watching this week's The Bubble, and trying to work out where on earth I recognise Josie Long from? Nothing in her CV is ringing any loud bells, but I know I've seen her in something. I'm wondering if she might have done some CBBC presenting or something - I know Holly Walsh has, and if it coincided with a run of The Sarah Jane Adventures or Totally Doctor Who, that'd explain the recognition factor...