Career
In Summer 2003, Gwilym started her own late night radio show on Mondays and Tuesdays as part of the C2 youth strand on British Broadcasting Corporation Cymru, broadcast live from British Broadcasting Corporation Cymru"s studios in Bangor and featuring contemporary Welsh language music, features, news & interviews and listeners" texts & e-mails. At the start of 2007, the programme was expanded to Sunday afternoons and Saturday afternoons during the summer (albeit pre-recorded). In October 2007, Gwilym started presenting shorter one-hour shows at 10pm on Thursdays and Fridays.
Between June and October 2010, Gwilym temporarily left C2 to present Cymru"s early morning show each weekday.
She returned on Monday 8 November 2010 to host the flagship 8-10pm show each weeknight. In October 2012, she moved to a weekly three-hour C2 show, broadcast 7-10pm on Wednesday nights.