In order to qualify for the accolade, councils must show a range of commitments.
Lambeth has been praised for a number of pledges including removing ‘No Ball Games’ signs from roads and on estates.
More than 200 council staff and 63% of elected members of the authority have also received children’s rights training.
Lambeth joined the UNICEF programme in 2021.
It developed its child-friendly action plan following consultation with more than 1,500 children and young people.
