However the Gnoll side still have to hope that the Arms Park youngsters lose both their remaining games to enable them to snatch the title. Neath have to play Llanelli away while Cardiff are at home to Pontypridd and away to Bridgend.
Wing Richard Carter again impressed crossing for a brace of tries and fly half Dylan Pugh maintained his recent league form by scoring a try as well as landing a penalty and a conversion. The forwards secured a penalty try while flanker Steve Tandy sealed Neaths eleventh victory in the league with a second half try.
Michael Hook replied with a brace of penalties and conversions as well as landing a drop goal while full back James Rowles and centre Scott Williams crossed for tries.
The Gnoll U'21s had secured a weekend victory after they defeated a Combined Services side by 19pts to 10 last sunday.
Lloyd Hayden crossed for a brace of tries while Shaun Connor added both conversions as Neath lead by 14pts to nil at the interval. A further try from lock Craig Jones secured an impressive win for the home side.
Nearly 40 players were involved in the first Wales Under 18 training session of the season. WRU National Performance Manager Gethin Watts is excited at the potential shown by the group and expects the Regional Under 18 Championship to hone their skills even further.