It's Hello Yellow day 💛 The O2 is proud to work alongside our official charity youngmindsuk to shine a light on World Mental Health Day ✨ YoungMinds is an incredible organisation who provide young people the tools to look after their mental health and empower adults to be the best support they can be to the young people in their lives. #TheO2 #TheO2London #YoungMinds #HelloYellow #WorldMentalHealthDay