After finishing a Brevet de Technicien Supérieur, Briois worked for a period as a salesman for Numericable.

[3] In the 2008 French municipal elections, Briois ran for mayor in Hénin-Beaumont on a list which had Marine Le Pen in second spot.

[4] The elected mayor, Gérard Dalongeville, resigned from his post in 2009 following allegations of economic irregularities, resulting in a by-election.

[9] At the National Front Congress in Lyon in November 2014, Briois was elected one of the vice-presidents of the party, responsible for local executives and supervision, and was succeeded by Nicolas Bay as general-secretary.

Briois, who neither denied nor confirmed the information, demanded along with another politician that the book be stopped for violation of privacy.

[11] Briois has subsequently revealed himself to be in a relationship with fellow National Rally politician Bruno Bilde.