Source: https://yougov.co.uk/ratings/entertainment/popularity/contemporary-actors/all

I extracted the 200 most famous actors from YouGov's API, cleaned up the data using an IDE to produce a single JSON file, then imported and creating the scatter graph with Excel. I refined the image using Adobe Fireworks.

Note: In order to declutter the chart and reduce overlapping of certain plot points, I deliberately removed a number of actors from the list - mostly choosing to remove those who are not as famous outside of Britain. See the source for the comprehensive list, extended to beyond 700 actors.