Gustav Mogensen got the all-important goal as the young Bees picked up a deserved win having dominated the chances on a chilly night in North London.
It was the Isthmian Premier Division side that had the ball in the net first after just two minutes, but the goal was ruled out for offside when Sean Grace rose to nod the ball into the net from Charlie Ruff’s in-swinging corner from the left.
Fredrik Hammar would have The Bees’ first chance of the game just a few minutes later when he worked it well with Mogensen before sending a fierce shot goalwards which was well tipped over by Fergal Hale-Brown.
More good opportunities would fall for Brentford B inside the first 10 minutes as Paris Maghoma’s free kick was blocked well before wonderful dribbling from Matej Majka then saw him tee up Joe Adams just inside the box before he swept the ball just over with his left foot.
Hammar would try his luck again when a David Titov throw found the young Swede who hit a low effort with his left foot and once again forced a smart stop from Hale-Brown as Neil MacFarlane’s side looked to go ahead.
Tage Kennedy then opened up a glorious chance for the hosts when he used his speed to skip past Kane O’Connor before crossing low, but the pullback was just behind the onrushing Olu Akinsanya as the young Bees managed to clear.
It would then be Brentford’s turn to have a goal ruled out when Arthur Read turned well before forcing a save out of the Wingate keeper, who could only push the ball into the path of Mogensen to tap home, but for the offside flag as the goal was chalked off.
Read then went inches from putting Brentford B ahead on 37 minutes when he whipped in a dangerous freekick from wide out on the right, and it seemed to catch Hale-Brown out as the ball crashed against the crossbar and away as the first half ended goalless.
The young Bees would start the second period excellently as they went ahead just a couple of minutes after the restart. After good play in midfield saw the ball threaded on to Mogensen who controlled well before he drove centrally and slotted home to get his 14th goal of the season.
Mogensen would have a glorious chance to double Brentford’s lead on the hour mark when Titov crossed superbly, and despite heading the ball back across goal, he forced an excellent save from the Wingate shot stopper.
More opportunities would fall for the young Bees as they continued to dominate much of the play. Both Mogensen and Christian Tue Jensen would have powerful attempts saved and Maghoma also had a good chance when he tricked his way into the box before his effort was pushed away from goal.
For as long as the score stayed at 1-0, though, the home side were still in the game and they had a glorious chance to level when a low cross in from the right found Sean Grace, and despite trying to stab an effort goalwards, Patrik Gunnarsson did well to block as The Bees held out for the win.
Wingate & Finchley: Hale-Brown, Ifil, Farrell, Oluwatimilehin, Eales (Sayoud, 82), Grace, Ruff, Tejan-Sie (Platt, 62), Akinsanya, Jellis (Fleming, 70), KennedySubs not used: Sayoud, Woods-Garness, GoreBooked: Grace, Eales
Brentford B: Gunnarsson, Sery Larsen, Thompson, Read (Tue Jensen, 63) O’Connor, Maghoma, Adams (Oksanen, 45), Hammar, Majka, Mogensen, Titov Subs not used: Carre, Mitchell, Andersson