Born into a Catholic family, he became a member of the Jehovah’s Witnesses at the age of fifteen before later converting to evangelical Christianity.

In 2009, he quit COPE to launch a radio station, esRadio [es], with Federico Jiménez Losantos.

[citation needed] He has published a series called Misterios de la Historia (Mysteries of History) in Libertad Digital.

[citation needed] Vidal was the first to translate historical sources such as The Egyptian History of Manetho, The Gnostic Gospels of Nag Hammadi, The Complete Narrative of Ancient Egypt, and Komintern Documents to Spanish.

[citation needed] Vidal is known for his far-right views on Islam, the Spanish Civil War, and José Luis Rodríguez Zapatero's administration.

[citation needed] His detractors, including historians Ian Gibson and Ángel Viñas, accuse Vidal of lack of rigor and biased arguments.

[citation needed] On his show, Vidal has claimed that Islam and France have been Spain's main enemies throughout its history.