The school food charity, which is based in south west London, invited 50 schools to join them along with celebrity chef Tom Aikens and gardener Chris Collins for a food themed celebration, which saw Aitkens judging the best picnic in Bake-Off style.
Founder and CEO of School Food Matters, Stephanie Wood, said: "It has been a whirlwind of a ten years and the work continues with a new government and new challenges ahead in the world of school food.
“Today illustrates just how much children want to learn about food – how to cook it and grow it – and that’s why School Food Matters will be around for at least another 10 years to ensure that the good folk at Whitehall make children’s health and food education a priority.”
The charity now works with hundreds of schools every year and in the last decade has worked directly with 30,000 children.