Niall’s first winner came on his first ride as a conditional for Moore when Eragon De Chanay won the '188Bet Casino Conditional Jockeys’ Handicap Hurdle' at Sandown on 11 November 2018.
Run on 28 January 2023, the race provided a notable upset. Editeur Du Gite wasn’t originally in the field: connections supplemented him for £2,250 after the race, the Albert Bartlett Clarence House Chase, was moved to Cheltenham from Ascot. His front-running boldness and tenacity marked his first Grade 1 triumph, with the ride giving jockey Niall Houlihan his maiden Grade 1 success