Wing Walker Price and scrum half Iestyn Lloyd both scored twice as the home side completed their Group 1 campaign with a fourth successive bonus-point win. Wing Huw Andrews scored the other try, while Llandrillo amply demonstrated the power of their pack by picking up two penalty tries.
Coleg Y Cymoedd gained revenge for their Arms Park defeat as they beat Cardiff & Vale College 26-10 at Sardis Road to take over at the top of Group 2. Evan Wood, Sam Harris, Chad Powell and Kyle Harris scored the tries that earned Cymoedd the bonus point they needed to leapfrog CAVC and finish top of the pile.
Llandovery College scored seven tries as they ensured they finished on top of Group 4 with a 41-12 win over Pembrokeshire Colleges. Left wing Finlay Baker scored twice and outside half Fraser Jones held himself to 11 points with a try and three conversions.
Other tries came from Skipper Tom Edwards, centres Tom Price and Ieuan Bussell and replacement Jacob Williams. The visitors scored two tries through hooker Cai Ifans and centre Macs Page. Outside half Gruff Morgan added a conversion.
Gower College finished with a flourish as they completed their Group 3 programme without defeat. Their 61-24 home win over Neath Port Talbot College contained nine tries, two of them from Will Thomas, and eight conversions form Jack Whitton.
Whitchurch HS only had themselves to blame for not recording their first win of the season after they fell to a last gasp try by Ysgol Glantaf hooker Dafydd Jones that earned the home side a 17-15 win.
That made it three tries to two, but Whitchurch had led 15-12 after their hooker, Jack Sweeney, had crossed the home line. They then lost their two locks, Ethan Hartley and Tom Moore to yellow cards in successive minutes as the clocked approached the red zone.
Against 13 men, Glantaf got themselves into position to make their numerical advantage tell and Jones scored the try that earned the victory.