Neath comfortably swept passed the challenge of Caerphilly at the Gnoll last night with scrum half Gareth James starring in a 51pts to 17 success.
The scrum half crossed for a hat trick of tries with full back Dylan Pugh also featuring prominently with a try, a penalty and a hat trick of conversions.
The home side had to produce an improved performance in the second half after the visitors had taken a shock 17-14 interval lead.
Further tries from wingers Richard Carter, Andrew Jones and centre Peter Smiriglia secured the win with Neath also being awarded a penalty try. Fly half Aled Davies added a conversion.
Llanelli, with three games in hand on Neath, needed a late try from number eight Aled Gravell to secure a 23pts to 11 win at Bridgend.
Scrum half Mike Phillips made a telling break and fed Gravell who crossed for the late second half score after fly half Paul Fisher and flanker Bryn Griffiths had both crossed for earlier tries. Fisher also added a brace of penalties and a conversion.
Lock Huw Alford replied with a try for the Brewery Field side and Jon-Pierre Ferreira added a brace of penalties after skipper Alun Lake had been forced from the field with a leg injury.
Swansea produced a fluent first half display as they lead 15pts to 3 at the interval in their clash with their Ebbw Vale counterparts.
However, the home side rallied after the interval and secured a 20pts to 15 win. Left-wing Paul Mackey, in is second game back after injury, and centre Matthew Brayley scored tries for the All Whites while fly half Gareth James added a conversion and a drop goal.
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