Eloi Pelissier has signed a new deal with London for the 2019 campaign.
Pelissier joined the Broncos on a short-term deal last year and played a key role in helping the club gain promotion via the Million Pound Game.
The former Catalans Dragons and Leigh Centurions star has pledged his future to the capital club.
Pelissier said: “I’m very happy and proud to be at London Broncos for the Super League in 2019.
“We created one big page of the London Broncos’ history in 2018, and I can’t wait to fight every weekend in Super League to create a new page.
“London is a family team where I feel good. My team-mates, the staff and the fans made me feel welcome straight away when I arrived and I would like to thank everyone for that.
“London Broncos deserve to be in Super League and I will give everything for that.”
Broncos’ boss Danny Ward commented: “Eloi joined us at the back end of the season and made a big contribution on the field.
“He is a great professional and has a lot of experience at the top level.
“Once we get over the French and Yorkshire language barrier, he will be a pleasure to work with!”