The music piece that the marching band plays is the "Turkish March" Rondo Alla Turca (Sonata No 11 in A Major) by Mozart. The original piece is for piano, here adapted for course.
Actress Perdita Weeks (playing the part of Hannah Moore) is the sister of Honeysuckle Weeks, who appears in Blood Will Out (1999).
The two books that are lying on the table by the stolen prize cup in the first victim, Martin Wroath, room are "The Origins of the First World War (Seminar Studies in History) 2nd Edition" by Gordon Martell and "Any Fool Can be a Pig Farmer" by James Robertson.
Tom Barnaby takes his tea "strong with one sugar."