Simon Jack Astaire: (born 3 June 1961) is a British media advisor, novelist, screenwriter, film producer. Astaire has a son, Milo, with his former partner, model Saffron Aldridge (also in Epstein’s Black Book).

There is no mention in the DOJ Epstein Library for Simon Astaire.

References:

1. https://epsteinsblackbook.com/names/mr-simon-astaire
2. https://en.wikipedia.org/wiki/Simon_Astaire