Since the video with nutritionist Emma Buckley was made, the length of time the free products are available for children has increased to 4 years, and applies to children up to 21 years at the start.  That’s right: Buy One Get One Free for 4 years !! 

http://www.youtube.com/playlist?list=PLmMKUArHwcmViUyV1I8i_uHx98m_68IFA

YouTube/moodandfood