London National Park city is a grassroots campaign and movement launched in 2014 in the UK by a group of citizens. Inspired by the concept of National Parks, the initiative aims to promote the idea of city as an ecosystem that should be protected and supported. The campaign defined the concept of a National Park City and created National Park City charter. The campaign worked with local government at city level (Greater London Authority) and lower levels (boroughs and wards) to secure political support and announce London as the first National Park City in the world in 2019. The campaign is working with residents, visitors and partners to "enjoy London’s great outdoors more; make the city greener, healthier and wilder; and promote London’s identity as a National Park City" by leading campaigns and supporting a range of activities. The campaign has partnered with the Mayor of London, who championed the concept in the London Environment Strategy in 2018.