Mark Percival bagged 22 points as St Helens eased back to the First Utility Super League summit by cruising past the London Broncos 58-16 in the capital.
Centre Percival grabbed two tries, as well as booting seven conversions, as the Saints ran in 11 tries across a comprehensive performance.
Jordan Turner and Matty Dawson scored two tries apiece for Saints, with Kyle Amor, Paul Wellens, Luke Thompson, Sia Soliola and Anthony Laffranchi also going over.
For the already-relegated Broncos, it was the latest disappointment in a campaign that saw their winless run stretch to 21 games.
James Woodburn-Hall, Will Lovell and Denny Solomona scored the Broncos' tries.
Catalan Dragons produced a sensational performance as they ran out 40-6 winners against Wakefield at Stade Gilbert Brutus.
Elliott Whitehead scored a hat-trick of tries as the Dragons crossed seven times to put the agony of last week's 37-16 defeat to Wigan behind them.
Morgan Escare scored a pair of tries for the Dragons with Daryl Millard and Zeb Taia claiming their other scores.
Reece Lyne crossed for the Wildcats' only try.