Penallta's 32-19 defeat of Abercynon sealed their second spot and confirmed their promotion as runners up. Centre Shaun Powell finished the season with a bang as he crossed for four of his side's five tries.
Bedlinog are the champions of Division Three South East after their 25-9 victory over Tylorstown. The runaway leaders were stripped of their unbeaten tag in midweek but made up for that with tries from Scott Giles, Craig Anthony and Thomas Cook to put their names on the trophy.
Division Three East champs Brynmawr celebrated their achievement with a seven try stroll past Croesyceiliog. Prolific skipper Damien Hudd once again weighed in with a try in the comfortable 37-17 win.
Abergavenny too clinched promotion as they eased to a 38-0 victory over New Tredegar.
Llandaff North showed why they had already been crowned Division Four South East champions as they thumped second placed Aberdare 52-12 while third placed Dowlais went down to a shock 20-12 defeat at bottom club Barry.