Personal life
Stephen Miller was born 26 May 1980, in Cramlington, Northumberland. He started participating in athletics at the age of 11. He joined an after-school club, where he met Paralympian Norman Burns. Burns would later become his coach.
He married Rachel Toland in August 2013. He was able to walk down the aisle with her since he had hip replacement surgery the previous October, which he had delayed until after the 2012 London Paralympics.
He worked part-time as a web developer at Queen Elizabeth Hospital in Gateshead. Miller and his wife founded SMILE Through Sport in 2013. The foundation encourages disabled people to participate in sports. He currently lives in his hometown of Cramlington.