80 mins | Drama, History | March 13, 2023
80 mins | Drama, History | March 13, 2023
| IMDb rating | 7.4 |
| Producers | Sianel 4 Cymru (S4C), Joio, Swnllyd |
| Original title | Y Sŵn |
| Directors | Lee Haven Jones |
| Writers | Roger Williams |
as Gwynfor Evans
as William Whitelaw
as Rhiannon Evans
as Margaret Thatcher
as Nicholas Edwards
as Ceri Samuel
as Phyllis Kinney
as Marjorie
as Ymgynghorydd i'r Weinidog
as Denis
as Rupert Edwards
as Dafydd Wigley
as Dafydd Elis-Thomas
as Goronwy Daniels
as Nerys
as Lord Harlech
as Meinir Ffransis
as Yr Arglwydd Cledwyn
as Martin Luther King
as Gandhi
as Wyn Roberts
as Manon
as Lady Littler
as Ffion
as Lady Plowden
as Emyr Jenkins
as Jennie Eirian
as G.O. Williams
as Fred Ffransis
as Gwilym