Part 1: Dear @BorisJohnson, 
We will see you on Friday 12:30pm @10DowningStreet. 
I've joined over 30 charities & young activists @BiteBack2030 calling for Boris to keep his promise to end to junk food advertising to kids & put more promotions on essential foods #EtonMess https://t.co/e4eewYMBnG