[2] Miller rose to fame when, at the age of 11, he was chosen out of 700 applicants for the titular role in Oliver Twist, the BBC One Christmas adaptation of the Charles Dickens classic of the same name, broadcast in December 2007.
[2] Miller starred as the lead character Sean in the 2009 British children's miniseries Runaway, broadcast on BBC One, which was part of the CBBC season about homelessness.
[3][4] Having previously played youth football for Leyton Orient, Miller joined Tottenham's development centre when he was 14.
[7] In January 2018, he injured his knee in a game against Queens Park Rangers, ending the season prematurely for him.
In an interview with The Guardian in April 2020, Miller revealed that he has retired from football and is pursuing a career as a film-maker and musician.