The RYA Case Book 2017-2020 (updated December 2019) is now available for download from the RYA  website.

Since original publication, RYA has added 2 cases.  The cases are not available for download individually (not that I could find), so download the RYA Case Book and scroll to the end to find them.

The 2 RYA Cases are ...

RYA 2017-01: (Rule 19.1, Rule 19.2(c))
At a mark laid adjacent to a continuing obstruction, the obligation of outside boats to give room to pass the continuing obstruction continues to apply. There is no requirement for boats to give mark-room to inside boats at the mark, who may only pass the mark on the required side while giving room for the continuing obstruction and, if windward boats, keeping clear.

RYA 2019-01: (Rule 76.1 Exclusion of Boats or Competitors)
Guidance on the rule and conditions, and some proper and improper grounds, for excluding boats or competitors.