This report summarises the important work carried out by the Anti-Trafficking Monitoring Group since 2009. Through building a ‘critical friendship’ with the UK Government, the ATMG has achieved considerable success, in particular in the areas of legal reform, resource allocation and political attention. The progress made by the UK in implementing the Council of Europe Anti-Trafficking Convention was acknowledged by GRETA in its second report on the UK, published in October 2016, which welcomed the political attention to tackling human trafficking, the adoption of dedicated legislation, as well as the multi-agency approach and engagement with civil society.