In Division Three West fullback Guillem Evans kicked 13 points for Aberystwyth in a 33-3 win over Lampeter at Plascrug. Eifion Gwynne, Paul Stubbs, Barrie Thomas and Arwel Lloyd crossed for the bonus.
In the only other game in the division Haverfordwest beat Amman United 19-3 at Cwmamman Park courtesy of two tries by Delve Vaughn and a hat-trick of penalties from the boot of winger Michael Venebles.
Vardre won the bottom of the table clash against Banwen 26-5 in Division Three South West and Skewen edged Briton Ferry 8-0 in the only other encounter.
The sole performance in Division Four West saw Morriston overcome Neyland 12-0 to go top of the league with tries from outside half Paul Whapham and centre Liam Davis.
Glais and Gowerton benefited from braving the elements in Division Five South West, Glais squeezing past New Dock Stars 13-10 and Gowerton strolling home 32-0 against Bynea.