The KidsRights Index is the annual global index which ranks how countries adhere to and are equipped to improve children’s rights. The KidsRights Index is an initiative of the KidsRights Foundation, in cooperation with Erasmus University Rotterdam: Erasmus School of Economics and the International Institute of Social Studies. It comprises a ranking for all UN member states that have ratified the UN Convention on the Rights of the Child and for which sufficient data is available, a total of 182 countries.
The UK is ranked 173 out of 182.
The KidsRights Index exists of 5 domains:
1. Right to Life
2. Right to Health
3. Right to Education
4. Right to Protection
5. Enabling Environment for Child Rights
Full details can be found here