In accordance with the Withdrawal Agreement (Article 24), the following provisions of European Union law continue to apply to British nationals: "the right not to be discriminated against on grounds of nationality in with regard to employment, remuneration and other working and employment conditions" as well as "the right to take up an activity and to exercise it in accordance with the rules applicable to nationals of the host State or working status" (Article 45 of the Treaty on the Functioning of the European Union).
British nationals remain, pursuant to Article 24 of the Withdrawal Agreement, "assimilated" to European citizens with regard to the specific rights granted to salaried workers for British nationals who entered the public service before 1 January 2021. Thus the rights of workers (concept understood in the broad sense which covers civil servants) as guaranteed by Article 45 of the TFEU are preserved by the Withdrawal Agreement. They can exercise under the same conditions as European citizens. In addition, the same reservations accepted for European citizens apply to them: they cannot occupy a post whose attributions are inseparable from the exercise of sovereignty or involve a direct or indirect participation in the exercise of prerogatives of power public of the State or other public authorities
The rights arising from their status as civil servants or public officials of British nationals who became civil servants or public officials in France before 31 December 2020 are therefore maintained, in particular with regard to access to the civil service or career development without that the loss of the quality of European national cannot be opposed to them.