In a game that Slough should probably have won, they had more chances throughout the game and came close to scoring in a first half low on chances.
There were chances for both sides inside the opening 20 minutes, with Kurtis Cumberbatch’s free kick being headed wide by Alfonso Tenconi and Darren McQueen’s effort beaten away by the outstretched hand of Jonathan North.
On 23 minutes, Freddie Grant played a cross into the box which fell to Tyler Goodrham, who managed to get in a side-footed effort, but couldn’t quite keep the ball down.
Slough maintained their threat as an attacking force as Aaron Kuhl and George Hunt made attempts on goal inside the Dulwich box, but the experienced Hamlet defenders deflected them out of play.
A more audacious effort from Slough came just before the half time whistle as Kuhl tried an attempt from inside his own half – but ultimately the ball went wide because of the wind which affected this afternoon’s clash.
It was goalless at the break but Slough made the breakthrough in the second half thanks to substitute striker Ben Harris, who bagged his first goal since November.
Harris had already gone close, heading narrowly wide at the back post from a free kick.
But on 68 minutes, Harris comfortably slotted the ball home from a George Hunt cross, the striker finding the roof of the net with his finish.
Before this, the hosts had hit the post with Reise Allassani unlucky to see his effort rebound away.
Dulwich desperately tried to level up the contest, and after Jordan Green had fired just wide from distance, their efforts were rewarded deep into stoppage time as Ibra Sekajja poked the ball in following a free kick.
It left the Rebels feeling dejected as for the second time in as many matches, they had lost a single goal lead late in the game - but Slough remain in the playoff picture, five points off seventh place with nine matches remaining.
Dulwich Hamlet Lineup
Charlie Grainger, Sanchez Ming, Andre Blackman (Tyrone Sterling 72), Quade Taylor, Jack Holland (c), Ronnie Vint, Reise Allassani, Jordan Higgs, Ibra Sekajja, Giovanni McGregor (Danny Mills 82), Darren McQueen (Jordan Green 72). Unused substitutes: James Dayton, Taofiq Olomowewe.