[2] He passed the exams for Associateship of the Royal College of Organists (ARCO) in 2009, winning the Limpus, Frederick Shinn, Durrant, and Lord St Audries Prizes.
[4] Holder held organ scholarships at Southwell Minster (2008–09),[5] the Royal Hospital Chelsea (2009),[6] St Albans Cathedral (2010–12)[7] and Westminster Abbey (2012–14).
[9][12] Holder was the organist for the state funeral of Queen Elizabeth II on 19 September 2022 at Westminster Abbey,[13][14] as well as for the service of thanksgiving for Prince Philip, Duke of Edinburgh on 29 March 2022.
[16] In the opening concert of the BBC Proms 2019 season at the Royal Albert Hall, Holder was the organ soloist in the Glagolitic Mass by Leoš Janáček, conducted by Karina Canellakis.
[1] Holder's first solo recording, 'Bach ist der Vater, wir sind die Buben' was produced at Neresheim Abbey in Germany.