Redruth have been relegated from National League One following Sedgley Park's 26-19 win over Macclesfield.
The result puts the Manchester club above Redruth in the final league standings, with the Reds finishing 14th - the third and final relegation spot.
Redruth's relegation comes despite a late run of form that saw them win their last three matches.
The Reds become the second Cornish club to go down, with Launceston also set to play in National Two South next season.
Redruth, who finished their campaign with a 33-22 win away at Wharfedale last weekend, managed 12 wins during the course of the season, alongside 16 defeats and two draws.