London launches multi-function buses to provide 'vital services' to homeless people such as 'access to a doctor, a dentist, showers, a haircut', according to Cemal Ezel, founder of Change Please, the foundation behind the initiative. Attending the launch of the initiative, Mayor of London Sadiq Khan says 'all of us have a role to play' if we want to 'end rough sleeping'. IMAGES AND SOUNDBITES