The winner came in the 81st minute with Benyon being in the right place at the right time, volleying the ball from close range giving the Rebels a vital 1-0 win late on.
Taunton started off the better team in this game but could not create much as both sides struggled to keep the ball in the wet conditions.
The visitors had a few chances from range in the first half, with the best chance of the half as Dave Sims-Burgess blazed the ball well over the bar from a few yards out.
In the latter stages of the first half, the Rebels begun to get a foothold in the game and started to create some opportunities.
After a half of limited chances for Slough, the best chance fell to Johnny Goddard.
A brilliant flick on from Ben Harris picked out the number 11, who unfortunately failed to get a clean connection with his effort, with the ball ending up safely in the keeper’s hands.
On 38, the Rebels had another chance with Johnny Goddard clipping the ball into the box to Aaron Kuhl, however the goal bound strike got blocked by Benyon, with the chance fizzling out.
After the interval, the Rebels came out much better, with Harris having the first chance of the half however the save was comfortable for Jack Bycroft in the Taunton goal.
On the hour mark Harris had a golden opportunity to put Slough in front, however he could not convert from Lench’s cross with the header sailing over the bar.
There was an aerial bombardment from the Taunton attack late on in the game, however Guy Hollis and Joe Dandy were solid in the Slough defence, with Rhys Forster in goal having to fend off Taunton giving the Rebels their first clean sheet of the season.
That’s two consecutive wins and four in the last five for Slough, as they now look forward to FA Cup action on Saturday against fellow National League South side Worthing in Second Round Qualifying at Arbour Park.
Taunton Town Lineup
J Bycroft, J Budd, J Foulston, N Grimes, D Ball, J Wannell, O Chamberlain, L James, N McCootie (Stearn 72), Z Smith (Morgan 82), D Sims-Burgess (Jarvis 55). Unused substitutes: Warwick, Staley.