The top three in Division Two West, Builth Wells, Loughor and Bridgend Athletic, all picked up home wins this weekend.
Bridgend Athletic recorded four tries from Nicholas Hinton (2), Simon Evans and Rob Coles in a 29-3 bonus-point victory over BP Llandarcy.
Loughor went two better, crossing six times during a 51-13 triumph against Penclawdd.
But it is Builth Wells who remain top after beating fourth-place Waunarlwydd 17-12.
Aberystwyth thrashed bottom side Amman United 48-0 in Division Three West, but still trail Pontyberem by ten points at the top of the table. Ponty won 36-24 at home to Llanybydder.
Newcastle Emlyn won narrowly at Lampeter Town, coming away from Ceredigion with a 26-24 victory.
With Brynamman's match against Burry Port postponed, Llandelio extended their lead at the top of Division Four West with a 24-0 win over Pembroke Dock Harlequins.
Division Five West leaders Cefneithin drew 15-15 at third-place Milford Haven.
Furnace United failed to capitalise on that result, and stay in second after they lost 29-0 at Fishguard and Goodwick.
Penlan picked up a bonus point at Tregaron, notching seven tries in a 44-25 victory to stay top of Division Six West.
Pontrhydyfen jump from fourth to second after scoring seven tries of their own in a 48-13 win at Aberavon Naval.
The last five years have been an emotional rollercoaster on and off the pitch for RGC1404. Promotion to the Principality Premiership was the culmination of five years of hard work and investment in North Wales. WRU TV caught up with prop Joe Simpson, who was one of the first intake of WRU North Wales Academy players in 2010.
Ebbw Vale captain Damien Hudd picked up the biggest accolade of the night at the 11th Principality Premiership Awards Evening held at Principality Stadium, after leading his side to the title for the first time.
Wales assistant coach Robin McBryde is predicting a tough battle against England on Sunday despite the fact they may not be considered to be at full strength. Players will be out to impress Eddie Jones which makes England a dangerous proposition, he says.
Wales U20 captain Tom Phillips and performance psychologist Dr Rich Neil explain why spending three days at Monmouth RFC has further strengthened the togetherness of the squad ahead of the #WorldRugbyU20s