The parents of a teenager who died after an allergic reaction to a baguette from Pret a Manger are hoping to "make food allergies history" with a ground-breaking trial

Natasha Ednan-Laperouse from Fulham died in 2016 after a severe reaction to sesame.

Her mum and dad have set up research to see whether a monthly dose of medicine from peanut and milk products could be used to build up tolerance over time.