Unicef Sweden’s latest television advert hit the headlines this week after it pointed out that the number of Facebook 'likes' don’t mean very much to children living with the threat of serious illness or death hanging over them.

The National Deaf Children’s Society spearheaded its online petition, calling on the government to intervene to stop local authorities cutting services for deaf children, with this heart-swelling film last month.

A jaw-dropping 60 per cent of the prison population is functionally illiterate, according to Beanstalk, a charity helping children to read. In this poignant film Beanstalk presents Jack, and his potential futures.

The humble letter has extraordinary power, as demonstrated by Amnesty International in its latest film showcasing some of the successes of its global letter writing marathon.