Having connections to Catholic organizations, during the Francoist dictatorship he directed the Institute of Hispanic Culture (Instituto de Cultura Hispánica) and served as procurador in the Cortes and as national councillor (1955–1977).

He was a law student in Madrid when the Spanish Civil War broke out and took refuge in the embassies of Finland and Paraguay, later doing work as a clandestine "fifth columnist" for the Nationalist forces.

After the death of Franco, he created New Force (Fuerza Nueva), a National Catholic organization, and in 1979 was elected a deputy for the Unión Nacional coalition representing Madrid.

In 1986, with the aid of Jean-Marie Le Pen, he reconstructed the group as the National Front and stood without success for the European parliamentary elections of 1987 and 1989.

In 1992 he became president of the Frente Nacional Español (Spanish National Front), the product of the union between his group and the Juntas Españolas.