This was a lesson for the Rebels to take their chances, as the home side could have been comfortably ahead at half time but instead were caught out twice in the second half, both goals wonder strikes from Jerry Amoo and David Hutton which gave Mark Scott no chance.
But Slough showed great togetherness and spirit, and kept going right until the death when Charlie Moone poked the ball in from a corner after Warren Harris had given the Rebels hope.
Kings Langley goalkeeper Xavi Comas made several saves in the opening ten minutes as Slough looked to get on top early. Lewis Putman embarked on a couple of long runs in the opening three minutes, the first of which ended in a shot which deflected up into Comas’ arms, and then Comas made a simple save as Putman tried his luck from outside the box.
Then, on five minutes, the keeper got a vital touch to a low James Dobson cross to turn it away from Moone and two minutes later, Comas was busy again as he fielded a long-range dipper from Lee Togwell.
The game settled after this quick start from the home side, but whilst the chances came less regularly, Slough remained in control and Moone almost turned in a Putman cross, but Comas held the ball on the line.
Elijah Adebayo could only head a corner over the bar, and Comas spilt a shot from Moone on the stroke of half time, but Adebayo couldn’t reach the ball to turn in the rebound.
Comas kept the game goalless with two close range saves from Moone in the space of two minutes early in the second half, and another from Mark Nisbet on 63 minutes after a long Guy Hollis throw fell to him.
Simon Dunn was shown a yellow card a minute later for a late challenge on Comas, and the Rebels’ frustration began to grow as Kings Langley took every opportunity to slow the game down and disrupt the rhythm Slough were trying to generate. Dobson joined him in the referee’s book shortly after for dissent - costly yellow cards for both players, as they will miss Saturday’s FA Trophy tie against Wingate & Finchley.
Worse was to follow for Slough on 66 minutes as the Rebels were hit with a sucker punch. Nisbet took a chance by not heading the ball away in the box, which allowed Jerry Amoo to try an ambitious effort, which he caught wonderfully, sending the ball over the head of Scott and into the far corner to give Kings Langley the lead.
The visitors had hardly threatened Scott's goal, but Slough were now chasing the game. Comas split and then gathered in a Simon Dunn strike and Adebayo hooked a shot just over the bar as Slough pushed men forward.
Warren Harris emerged from the bench to replace Paul Stonehouse and joined the attack, but Kings Langley looked to have killed the game off with a second screamer, this time from David Hutton, with nine minutes remaining. This was an opportunistic effort which Hutton caught perfectly on the half volley from around 40 yards out, and with Scott off his line, the keeper had no chance as the ball sailed over him and hit the back of the net.
Slough stuck to their task but a comeback looked unlikely until Harris gave his side a lifeline in the 89th minute, drilling in from six yards after Adebayo found space to work the ball to him.
Harris then inadvertently went close to equalising when his deep cross clipped the outside of the post with Comas beaten.
All hope looked lost when Nisbet was dismissed after receiving his second yellow card for a foul in the centre circle as Kings Langley broke away – an offence similar to his first caution – but in the seventh minute of time added on, Slough won a corner from which the equaliser arrived. Scott made his way up and almost made contact with Dobson’s delivery, but the ball fell perfectly for Moone to stab it past Comas.
There was still time for the visitors to play a long free kick into the Slough box in the ninth added minute, but a headed effort was easily held by Scott, bringing to an end a remarkable second half.
Kings Langley Line up
Xavi Comas, Emmanuel Folarin, Ryan Plowright, Gary Connolly (c), Jorell Johnson, Charlie Ten-Grotenhuis, Steve Ward, Dean Hitchcock, Immanuelson Duku, David Hutton, Jerry Amoo. Subs: Mason Bush, Daniel Green, Joe Gallagher, Boris Kipeya, James Calvin.