East Kilbride won promotion to Scottish League Two for the first time and sent Bonnyrigg Rose down after a 0-0 draw at New Dundas Park saw the visitors triumph 3-1 on aggregate.
Bonnyrigg goalkeeper Paddy Martin did well to keep out a Joao Balde strike in the 24th minute, before Aaron Arnott fired over at the other end.
Kerr Young was unable to make the most of two chances for the hosts midway through the second half, with one header coming off the crossbar and a second being saved by Chris Truesdale.
East Kilbride forward John Robertson subsequently missed with a shot late on as Mick Kennedy’s Lowland League champions sealed their ascension and condemned Jonny Stewart’s Bonnyrigg to relegation.
While the Kilby make a first entry into the SPFL, the Rose drop out after three seasons.
