w yn f ry n ▁was ▁receiving ▁demo ▁t apes ▁from ▁across ▁Wales , ▁and ▁introduced ▁a ▁" p atter " ▁of ▁Wel sh ▁language ▁pop ▁sl ang ▁in ▁the ▁show ▁which ▁appe aled ▁to ▁younger ▁listen ers . ▁In ▁ 1 9 7 0 ▁he ▁joined ▁Children ' s ▁Program ming ▁and ▁worked ▁on ▁document aries ▁from ▁different ▁parts ▁of ▁the ▁world . ▁ ▁He ▁has ▁been ▁with ▁the ▁Wel sh - language ▁radio ▁station ▁Radio ▁C ym ru ▁since ▁its ▁in ception ▁in ▁ 1 9 7 7 , ▁front ing ▁the ▁flags hip ▁morning ▁programme , ▁and ▁present ing ▁shows ▁such ▁as ▁H yw el ▁a ▁N ia ▁and ▁Hel o ▁Bob ol , ▁and ▁reporting ▁ann ually ▁from ▁the ▁E isted df od . ▁Al ong side ▁his ▁radio ▁career , ▁G w yn f ry n ▁has ▁also ▁presented ▁TV ▁shows ▁such ▁as ▁Hed di w ▁and ▁Rh ag len ▁H yw el ▁G w yn f ry n , ▁and ▁in ▁ 1 9 7 2 , ▁with ▁H uw ▁Cer ed ig , ▁started ▁a ▁week ly ▁Wel sh ▁disco ▁called ▁N os on ▁Bar bare lla ▁in ▁Card iff . ▁In ▁ 1 9 9 0 ▁he ▁front ed ▁On ▁your ▁bi ke , ▁a ▁TV ▁programme , ▁following ▁the ▁fort unes ▁of ▁Wel sh ▁families ▁who ▁had ▁gone ▁to ▁live ▁in ▁other ▁countries . ▁ ▁G w yn f ry n ▁has ▁also ▁written ▁four ▁p antom imes , ▁including ▁J iw ▁J iw