Prince William went to heaven in London in a helicopter today when he visited London Air Ambulance.
The Duke of Cambridge was a dot in the sky as he circled the capital's iconic skyline, flying over The Shard and The Gherkin.
His visit – on wife Kate's 37th birthday – came as he became an actor of the organization's 30th anniversary campaign to recognize the work of the organisation's first respondents, delivering life-saving treatment across London.
It also comes weeks after he revealed his own work as a pilot in events where the children left him "felt very sad and very down" that almost took him "over the edge".
Through his work as an air traffic controller for East Anglian Air Ambulance, William has seen the first-hand impact they have on the lives of patients with critical injuries.
He also opened up his own experiences of feeling "very sad and very down" while working for the air ambulance service.
The royal, 36, said he had his own children who thought he was deeply affected mentally while out of work.
William spoke at the introductory This Can Happen conference in London in November, aimed at solving mental health issues in the workplace.
The father of three said he felt particularly lucky to have worked for the RAF and Air Ambulance because of their good mental work practices.
London's Air Ambulance, celebrating its 30th anniversary this year, delivers an advanced trauma team to critically injured people in London 365 days a year.
Before the establishment of charity in 1989, many severely injured patients lost their lives unnecessarily because of the delay in receiving rapid and appropriate medical treatment.
Since its inception, London's Air Ambulance has provided rapid response and groundbreaking medical assistance, bringing an emergency hospital ward and delivering life-saving treatment to the 10 million people who live and work in London.
The Duke will also hear more from London's Air Ambulance pilots, clinicians and paramedics about their experience of working as first responders and the challenges they face in London.
His royal highness will also learn more about the work LAA has committed to in the field of mental health support for its employees.
The Duke will then join employees, patients and their families on a tea party that marks the London Air Ambulance's 30th anniversary.
Jonathan Jenkins, CEO of London's Air Ambulance Charity, said: "We are pleased that The Duke of Cambridge has accepted the role of London Air Ambulance 30th Anniversary Campaign.
"Through his support, we aim to raise awareness of the life-saving work done by us and with air ambulances across the UK.
"Our crew faces significant challenges when we deliver our prompt response and groundbreaking medical treatments in London.
"Through funds raised in our 30s, we plan to improve our facilities to ensure we can respond even faster, improve our training and ensure our crews have the facilities they need for their mental health and well-being."