Sittingbourne were involved in a potential play-off final dress rehearsal on Good Friday.
The Brickies were held to a 1-1 draw by third-place Burgess Hill at Woodstock.
Brannon O’Neill’s opener just before half-time for the visitors was cancelled out by Ade Azeez in the second half.
The sides could yet meet in the Isthmian South East play-off final should they both win their semi-final matches.
Margate, in fourth, will want to spoil the party, however. They showed good form with a 6-2 win over Beckenham at Hartsdown Park.
Max Walsh scored a 22-minute hat-trick and player-boss Ben Greenhalgh added a fourth as Margate led 4-0 after just 29 minutes.
Substitutes Louie Atkins and Ben Allen both netted in the second half with Louie Theophanous netting twice late on for the visitors.
Ramsgate wrapped up the title with a 4-0 win at Hythe. Read our match report from Reachfields here.
Gil Carvalho scored a stoppage-time winner as Sheppey moved up to eighth after defeating Steyning Town 3-2.
Alex Brewer put the hosts ahead but Steyning were reduced to 10 men early in the second half.
Sheppey took advantage as Rhys Wyborn and then Aaron Archibald equalised before Carvalho struck late on.
Ashford bounced back from last weekend’s shock defeat to Steyning by winning 3-1 at Littlehampton Town.
Gary Lockyer bagged a brace in eight first-half minutes for the visitors. Josh Short pulled one back after the break but Louis Collins wrapped up the points for Ashford late on.
In Isthmian Premier, Cray Valley need one more win to book their place in the play-offs after a 3-0 success at home to Whitehawk.
Matthew Vigor put the Millers ahead early on before captain Kiki Oshilaja netted on the half-hour, and he then repeated the trick early in the second half.
Dover are down to fifth after losing 3-1 at title-chasing Dartford. Read our match report from Princes Park here.
Folkestone suffered a second successive defeat under new boss Jay Saunders, losing 2-0 at second-place Billericay with Frankie Merrifield scoring twice in four second-half minutes.
Cray Wanderers finished with nine men in their 3-0 reverse at third-place Horsham.
Harvey Sparks put the hosts ahead before substitute Ezechukwu Ebuzoeme saw red on 71 minutes. Lucas Rodrigues made it 2-0 four minutes later. Cray then had skipper Tom Bonner sent off in stoppage time with Sparks netting his second to seal the win.
