Son Heung-min’s 86th-minute winner helped Tottenham get their Champions League qualification hopes back on track with a 2-1 home victory over Luton.

Luton made the perfect start in north London when Tahith Chong rifled them ahead after three minutes and Rob Edwards’ side threatened to come away with a rare win when Spurs went another first half without a goal.

While Tottenham have now failed to score during the first 45 of seven home games in a row, Ange Postecoglou’s team produced another second-half rally thanks to substitute Brennan Johnson.

Johnson set up Issa Kabore’s 51st-minute own goal and teed up Son four minutes from time to help the hosts bounce back from their Fulham humbling two weeks ago with a much-needed victory.

Luton arrived in the capital buoyed by the fact they moved out of the relegation zone during the international break following Nottingham Forest’s points deduction and they started with a bang.

Only three minutes were on the clock when the visitors broke at pace down the right and after Andros Townsend burst past Yves Bissouma too easily he recycled the ball to Ross Barkley, who teed up Chong for the opener.

Chong’s low finish in off the post was his fifth goal of the season and represented more frustration for Spurs but they should have levelled after 15 minutes.

Dejan Kulusevski’s excellent crossfield pass released Timo Werner, who turned Kabore inside out before he scuffed wide with only Thomas Kaminski to beat.

Five minutes later and Tottenham went close again with captain Son remarkably hitting both posts.

Kulusevski played in Son, who rounded Kaminski but saw his shot hit both uprights after it rolled across the goalline before Pape Sarr’s follow-up strike was cleared off the line by Teden Mengi.

The Hatters were able to impressively regroup and finished the half strongly with Alfie Doughty’s goalbound volley blocked by Pedro Porro.

Boos greeted the half-time whistle and Postecoglou reacted with Johnson introduced for Kulusevski, which had the desired impact.

Not long after Guglielmo Vicario had denied Ross Barkley’s long-range effort, Spurs attacked down the right and Johnson followed up a one-two with Porro with a superb delivery to the back post that Kabore fired into his own net.

Tottenham were in the mood now with Son denied by Kaminski before the Luton goalkeeper clawed away Porro’s deflected cross.

Edwards’ side remained a threat from set-pieces and Vicario had to be alert to thwart a low effort by substitute Jordan Clark before the hosts made a double change with Rodrigo Bentancur and Giovani Lo Celso introduced.

It nearly paid dividends immediately with Werner able to find Lo Celso, who picked out Johnson but his close-range effort was blocked by Kaminski and Doughty cleared with the ball a matter of millimetres away from crossing the goalline.

Spurs would not be denied though and Son grabbed the winner with four minutes left.

A slick counter-attack from Luton’s corner saw Werner race down the left and his cross found Johnson, who teed up Son to score via a deflection for his 15th goal of the season.