Defeat to Corsham hands them the title.
in a hard fought game of 2 halves Melksham went into half time in the lead but Corsham showed why they are division champions with their second half performance.
CORSHAM can clinch the Dorset & Wilts One North title this weekend after overturning a half-time deficit to defeat Melksham 24-10 at Oakfields on Saturday.
The champions-elect stretched their flawless winning record to 19 games this season as Ben Russell crossed for a brace of tries and Lewis Jones and Jack Beazer also touched down, Kalif Barnes adding two conversions.
Melksham led 10-5 at half-time but Corsham dominated the second half to score three tries and take the bonus-point success.
The home side were first on the board with Charlie Radcliffe carrying over from a quick tap and go, fly-half Callum Hurn adding the extras and later adding a penalty before the break.
Corsham head coach Tim Draper, whose side host nearest challengers Warminster this weekend, said: "Playing into a very strong wind in the first half we were too loose and made a lot of errors which Melksham took advantage of.
"We tightened up our attacking play in the second half, used the conditions well, created and finished some good scoring opportunities.''