This was the poster that started it all. Save the Children were looking for a new fundraising idea, and my concept of Christmas Jumper Day was sold in as a fun, festive way to raise money. Today, it's their biggest annual fundraiser.

What began with a tiny budget has grown into a nationwide tradition, expanding internationally with TV campaigns, celebrity support and launches across the US and beyond. In 2016, the campaign was recognised with a Gold IPA Effectiveness Award, proving the power of a simple idea, brought to life well.