He won in the second round against Socialist candidate Axelle Lemaire, whom he succeeded in office.

Born in Switzerland, Holroyd holds French and British citizenship.

[4] Since 21 June 2017, Holroyd has served as a deputy in the National Assembly, representing Northern Europe.

[7] In addition to his committee assignments, he is part of the French Parliamentary Friendship Group with the United Kingdom.

In July 2019, Holroyd voted in favour of the French ratification of the European Union's Comprehensive Economic and Trade Agreement (CETA) with Canada.