Also a voice-over artist and a writer of novels and children's books, Spiegel lives currently in England.

He studied acting in London with Philippe Gaulier, Tony Greco (Actors Studio) in New York, and comedy with Michel Galabru in Paris.

Spiegel has worked on many occasions for the BBC and portrayed various characters such as ministers, politicians, doctors, gangsters, cops, scientists in series like Roger Roger II, Schubert (as Schubert), Bonekickers and more recently portrayed French Foreign Minister Christian Pineau in The Crown for Netflix.

Spiegel has acted in a variety of series for Channel 4 (The Queen's Sister) and ITV (Wing and a Prayer, Hale and Pace) or for France 2 (Le Grand Charles).

He also worked for the cinema in France and in the UK with film directors such as Jean-Pierre Mocky, Roger Goldby, and on stage in various plays.