Plaid Cymru's By-election Shock and Ambition

Can Plaid Cymru replace Labour as the party of power in Wales next year? Rhun ap Iorwerth, the party's leader, thinks so.

Rhun ap Iorwerth joins Nick in the Political Thinking studio to talk about how his parents' passion for Welsh heritage and language formed the basis for his vision for the country.

They explore Welsh identity and the anti-monarchy spirit that inspired the name of his teenage band.

Also on the agenda: immigration, mispronunciations, and Robbie Williams.

Producer: Daniel Kraemer Research: Chloe Desave Editor: Leela Padmanabhan