Shiskine is rated for course rating and slope now, as are many (most?) courses in the UK. 63.3 / 99 from the whites, 62.0 / 97 from the yellows. Edit: just realized this is for their 18 hole setup, as the ~62-63 course rating would suggest. I think par there is 42 or so for the 12 hole course.
I am not aware of any par 3 courses (Bandon Preserve, Sandbox at Sand Valley, et al) that are rated for handicap purposes in this manner.