|Lancelot du Lac (Directors Suite)||R4|
The Region 4 release seems to be a direct port of the French Region 2 Gaumont version, which does not have English subtitles. The Gaumont transfer was also used for the UK Region 2 Artificial Eye release which does have subtitles and also a director filmography.
Judging by screen captures available on the internet the Region 2 is superior to the Region 1 release from New Yorker, so this would also hold true for the Region 4.
The addition of an audio commentary probably pushes the local disc ahead of the Region 2.