In 2008, Pierce and Matthew Wall founded the band Hafaliadau = Equations. Owain Taylor-Shaw joined in April 2008, followed by Mark Flanagan. Their debut album was released in November 2008. Pierce is known for his roles as Osian James in the
S4C TV-series
Caerdydd (five series, 2006–2010) and Lenny Mack in
Sky 1's
Stella (two series, 2013–2014). He appeared in such
S4C series as
Y Gwyll,
Cara Fi,
Alys,
Pen Talar,
Cowbois ac Injans and soap
Pobol y Cwm. He appeared in the second series of
Y Pris in 2009 as skinhead Nicky. In 2013, Pierce narrated all 11 episodes of
Doctor Who: The Doctors Revisited, a documentary series in which each episode focused on an individual lead actor of
Doctor Who in the run-up to the programme’s 50th anniversary in November of that year. He also played George of Clarence in
The Globe's production of
Henry VI. In March 2016, it was announced Pierce would be joining the regular cast of
BBC1's
Ordinary Lies for its second series. In 2020, Pierce played Gavin Moss, son of Philip Moss, in the
BBC Radio 4 series
The Archers. In August 2020, it was announced that Pierce has replaced
Bruno Langley in the role of
Todd Grimshaw in the
ITV soap
Coronation Street, Langley having been
convicted for sexual assault in 2017. ==Filmography==