|Catalans Dragons (12) 20|
|Tries: Myler, Wiliame, Anderson Goals: Walsh 4|
|London Broncos (10) 18|
|Tries: Barthau, Williams, Ioane Goals: Sammut 3|
Catalans Dragons began their campaign to secure their Super League status with a hard-fought victory over London.
The Broncos, who finished second in the Championship table behind Hull KR, twice led their Super League hosts.
William Barthau and Rhys Williams went over for London, with Richie Myler and Brayden Wiliame each responding to edge Dragons 12-10 ahead at the break.
Louis Anderson's try sealed Dragons' Qualifiers win, with Mark Ioane's third score for London coming too late.
Catalans Dragons: Tierney; Thornley, Inu, Wiliame, Duport; Walsh, Myler; Moa, Aiton, Casty, Anderson, Horo, Bird.
Replacements: Bousquet, Garcia, Baitieri, Margalet.
London Broncos: Walker; Williams, Hellewell, Channing, Kear; Sammut, Barthau; Evans, Ackers, Roqica, Wilde, Pitts, Davis.
Replacements: Pewhairangi, Gee, Ioane, Battye.
Referee: Chris Kendall.