He is a former Deputy Mayor of Versailles (2008–2019) and is now a Member of the European Parliament (2019–present), having led The Republicans (LR) list in the 2019 and 2024 election.

He won the Prix d'Aumale from the Académie Française in 2014 for his first book, Les déshérités ou l'urgence de transmettre.

[5] In this essay, he analyses the failure of the French educational system as the result of an ideology that refuses the transmission of culture, thus creating disinherited students.

[8] During the 2024 French legislative election, he stated that he would support the far-right Rassemblement national in a second-round contest against the left-wing New Popular Front.

[9] In a joint letter initiated by Norbert Röttgen and Anthony Gonzalez ahead of the 47th G7 summit in 2021, Bellamy joined some 70 legislators from Europe and the US in calling upon their leaders to take a tough stance on China and to "avoid becoming dependent" on the country for technology including artificial intelligence and 5G.