Joshua was born in Hampton, England in March, 1987 to Martin and Jessica Herdman. He is the youngest of four boys. He started acting when he was about seven. His father is an actor and got him an agent. He got his big break when he auditioned for "Harry Potter and the Sorcerer's Stone" and got the part of Gregory Goyle. In his spare time, he enjoys going back home to Hampton, spending time with friends and family, reading and writing.
Harry Potter and the Prisoner of Azkaban
As Gregory Goyle
Harry Potter and the Goblet of Fire
As Gregory Goyle
Harry Potter and the Order of the Phoenix
As Gregory Goyle
Harry Potter and the Half-Blood Prince
As Gregory Goyle
No Way Home
As Jason
Harry Potter and the Deathly Hallows: Part 1
As Gregory Goyle
Harry Potter and the Deathly Hallows: Part 2
As Gregory Goyle
Piggy
As Anthony
Common People
As Simon
Harry Potter and the Philosopher's Stone
As Gregory Goyle
Harry Potter and the Chamber of Secrets
As Gregory Goyle
Robin Hood
As Righteous
Sink
As Jason
Two Graves
As Teddy
Thunderpants
As Damon
Alex Rider
As Stan
The Games
As Self
The Man Who Fell to Earth
As Terry
Andor
As Delivery Guard #1
Creating the World of Harry Potter
As Self - 'Gregory Goyle'
The Crust
As Gordon