Roadcraft 2020 is not in the public domain. Crown Copyright protects it, and no authorized free PDF distribution exists. Any downloadable PDF claiming to be the full 2020 edition without payment is:
The edition (ISBN: 9780117083783) was officially released on October 26, 2020 . Prepared by the Police Foundation, it is the authoritative guide for advanced driving in the UK, used by emergency services and driving instructors. Availability and Official Downloads Roadcraft 2020 Pdf Download--