This report is an updated version of analyses undertaken in previous years (Gill and Crawford, 2016; Gill, 2017; Gill, 2018) looking at the impact of the introduction of new accountability measures (Progress 8) on the qualifications and subjects taken by students at the end of Key Stage 4 (KS4). The focus of this report is on changes to the uptake of qualifications and subjects since the introduction of Progress 8. However, to provide some context and to give an indication of long term trends, results are presented for all years from 2007/08 to 2019/20. This time period includes some other important changes to accountability measures, such as the introduction of the English Baccalaureate (EBacc) performance measure in 2010 and the change to eligibility for performance tables of qualifications following the publication of the Wolf review of vocational education. The results presented in this report suggest that most schools are now fully adjusted to Progress 8 as the main accountability measure. [For the previous report, "The Impact of the Introduction of Progress 8 on the Uptake of Qualifications in English Schools - An Update for 2016/17. Research Report," see ED622150.]