Transport operator Go-Ahead Group has partnered with French firm Groupe Lacroix & Savac to target public transport contracts in Paris.
City authorities have started the process of putting routes out to tender as state-owned Epic RATP will lose its monopoly in 2025.
The move is part of Go-Ahead's The Next Billion Journeys growth plan which aims to achieve £4bn revenues, partly by replicating its successful bus business model in other markets.