Nick Jones (2), new full back Sion Brace (2), Kevin Allen, Gareth Bennett and Marc Davies added other tries with a lone effort for Brynmawr by Chris Alford.
Glamorgan Wanderers jumped to second after defeating Bridgend Athletic 34-3 with tries by Mark Haywood, Lawrence Price, David Willey, skipper Keith Stewart and a penalty try.
There were shocks as a a penalty try helped Blackwood win 13-9 at Carmarthen and great veteran Glenn George notched a try as Fleur de Lys opened their account by trouncing Llangennech 23-6.
Beddau ran in seven tries, including a Chris Jones brace, with 17 points from Brett Davey to crush Bonymaen and a late drop goal by Aled Davies helped Whitland win at Builth Wells while eight Rhys Edwards penalties saw UWIC through at Tonmawr.
