_,,,^..^,,,_ said:
What do you think about 1.66:1 instead of 1.85:1?
Since this was shot open matte, I'd say have both the cinematic 1.85:1 available and custom 1.66:1 version for a more "British" feel.
As I've mentioned, I'd go for a HDTV broadcast of this, especially one which has the film grain retained, as the Blu-ray isn't even worthy of a purchase or to make a copy of for this project.
Do you have the Special Edition Laserdisc, OP?