The Rebels won 1-0 at Creasey Park against fourth-placed Dunstable Town thanks to a goal two minutes after half-time from Simon Dunn.
Second-placed Leamington ensured the gap between them and Slough didn`t get any bigger after they won 3-0 at the New Windmill Ground against King`s Lynn Town.
A crowd of 345 saw Ahmed Obeng break the deadlock on the hour-mark and then goals in the final six minutes from Courtney Baker-Richardson and Jack Edwards sealed the Brakes` win.
Hitchin Town moved into the top five after a 2-1 win at mid-table Kings Langley.
Robbie Burns gave the Canaries a 26th minute lead that Callum Donnelly added to three minutes after half-time. Josh Hutchinson reduced the deficit three minutes from time but the visitors held on.
Merthyr Town and Stratford Town moved into eighth and ninth place respectively after wins on Tuesday.
The Martyrs won 2-0 at Penydarren Park against struggling Dorchester Town, thanks to a Kayne McLaggon brace after 25 and 77 minutes.
Stratford won 2-1 at the Corinium Stadium against another struggler, Cirencester Town.
Jamie Sheldon gave the visitors an early ninth minute lead that Aidan Bennett cancelled out seven minutes before the break. However, four minutes after that, Simeon Tulloch won it for Stratford.
Managerless Hayes & Yeading United earned a vital 1-0 home win over fellow strugglers St Ives Town, courtesy of an Olumide Durojaiye penalty with 17 minutes remaining.
Weymouth leap-frogged Basingstoke Town in mid-table after a comfortable 3-0 Bob Lucas Stadium victory in which Ben Thomson opened the scoring after eight minutes.
Stewart Yetton added a second in the 25th minute and Billy Lowes the third just after half-time.
Kettering Town looked like breaking their recent indifferent form as they led Biggleswade Town 2-1 at the Carlsberg Stadium with seconds remaining but they had to make do with a point after Tony Burnett popped up with a last-gasp leveller.
Earlier, James Brighton after nine minutes and Nathan Hicks on 23 minutes, had given the Poppies a 2-0 lead that Inih Effiong cut for the Waders six minutes later. And that was that until the late drama.
Follow the EVO-STIK League Southern on Twitter at @SouthernLeague1
Keep up-to-date with our exclusive email newsletters.
Subscribe