London schools continue to constitute an extraordinary "success story." By common consent, the government school system in London achieves extremely good results compared to the rest of England, and students from disadvantaged backgrounds do particularly well. In 2014, the authors sought to document and provisionally explain the London transformation, "School improvement in London: A Global Perspective." Since then, much has happened in England including some important changes to the way that school performance is measured. This report looks at the performance of London schools using the new performance measures and asks the question: Are London schools still doing well and outperforming the rest of England? The answer is an emphatic "yes." In the summer of 2018, the authors talked to 11 expert witnesses with different perspectives about the London story. Their majority view was that there had indeed been a radical change in school quality in the first decade of the century and this had been sustained in the second decade of the century. The explanatory factors for London's continuing success that they identified included: success in recruiting and retaining great teachers, highly effective school leadership, and the impact of well-designed school improvement interventions. This investigation confirms that the London government school system continues to perform well. While in many other countries urban schools and students from immigrant backgrounds underperform, the multi-ethnic population of London schools outperform students in the rest of England. In the authors' view the credit for this should be given both to the students and to the education professionals who provide an environment where the students can thrive. While every school system is unique there is much that policymakers from around the world can learn from the way London schools have built and sustained success. [For "School Improvement in London: A Global Perspective," see ED565743.]