He is perhaps best known for his contributions to film scores including those for Gosford Park, Harry Potter and the Goblet of Fire, Manchester by the Sea and numerous others.

[4] Soon after his graduation from the Royal Academy of Music, Shearman began providing orchestrations to film scores.

[5] This led to Shearman providing orchestrations and arrangements for Doyle on another 1998 film, Quest for Camelot.

[1] He has gone on to provide conducting, orchestration, and/or arrangements for Doyle's scores for Thor,[7] Rise of the Planet of the Apes,[8] Brave,[9] Harry Potter and the Goblet of Fire,[10] Cinderella, and numerous others.

[13] Over the course of his career, Shearman has also collaborated with numerous other composers including, Lesley Barber (Mansfield Park, Manchester by the Sea),[14] Mark Isham (In The Valley of Elah, Reservation Road),[15] Stephen Warbeck (Shakespeare in Love),[16] Paul Cantelon (The Other Boleyn Girl),[17] Jan A. P. Kaczmarek (Lost Souls),[18] Alan Menken (Beauty and the Beast, Aladdin), and Hans Zimmer (Pearl Harbor).

[20] In March 2014, he conducted the Ulster Orchestra for the first time with The Music of Patrick Doyle from the Films of Sir Kenneth Branagh.