SAINTS easily saw off the challenge of relegated London Broncos to return to top spot with a series of late tries flattering the visitors.
Nathan Brown's men were always in control - and it was always a case of how many in a game played in blistering heat.
The only negative was the sight of Lance Hohaia hobbling off and having his foot placed in a protective boot.
Saints took the lead with a Mark Percival try after seven minutes, and they soon doubled that with a Kyle Amor close range effort.
And when Alex Walmsley pierced the line, backed up by James Roby, Saints were in again with Jordan Turner crossing.
But the one way traffic was reversed when Jon Wilkin's kick was charged down allowing James Woodburn-Hall to race in.
But further Saints tries from Turner, and one from Paul Wellens, albeit from a pass a mike forward, pushed Saints into a 28-6 lead at the break.
Good hands from Wilkin and Wellens fashioned a 47th minute try for Percival as Saints experimented with James Roby off the pitch.
Broncos replied with a Will Lovell try, followed by a Denny Solomona touchdown and suddenly shades of last week against Bradford reared their ugly head, pegging the score to 32-16.
And to compound their misery Hohaia hopped off and played no further part in the game.
But as the game entered the last quarter, Saints showed some all too rare ruthlessness with Matty Dawson polishing off a nice movement.
Luke Thompson was rewarded for his form of late, running a good line for a well-taken try.
By now Saints sensed some easy points were in the offing and Sia Soliola raced in from the restart for a 65 metre score.
Two late scores - a barge over from Anthony Laffranchi and another from Dawson flattered Saints a touch.
But in mitigation it was ridiculously hot - so it was no wonder they did not hit their straps for the full 80 minutes and really run up a cricket score that was probably there for the taking.
London: Thomas; Minns, Farrar, Woodburn-Hall, Solomona; Keyes, Drinkwater; Slyney, Moore, Krasniqi, McMeeken, Foster, Cook; Lovell, Wallace, Griffin, Wicks.
Saints: Wellens; Dawson, Turner, Percival, Swift; Hohaia, Wilkin; Amor, Roby, Walmsley,Soliola,Flanagan, Jones. Subs: Masoe, McCarthy-Scarsbrook, Laffranchi, Thompson Ref T. Roby