If there is going to be one age, someone will have to spend time deleting the old one, and creating the new tables to match what is already on the page. I think the Best Actor page looks very messy having the two different categories there one on top of the other. I mean in one year alone for Best Lead Actress there was 10 foreign nominees, and then adding the British nominees on top of that would be overwhelming and keeping them separate makes it more simple. It is encyclopedic and  not factually incorrect if it states at the top of the page the the winners from 1952-1967 are the winners of the Best Foreign Award. The Best Foreign winners are winners from many different countries and the Best British winners are obviously all British and most from British films, so I feel they are very different and should be on separate pages. Creating 3 would be making it hard for potential readers to figure out where to go look for the listings. I think the way it is now is fine.