Okay, just as with James Horner, I have caught John Murphy reusing notable cues.
The ones i ran across involved 28 Weeks Later, Sunshine, and Kick-Ass, two separate cues each used (with slight modification, but obviously not even near enough to result in me not noticing) in at least two of the movies in that selection, and maybe more if I'd scan each movie in its entirety. It was bad enough that I didn't even realize he did all three of those movies until I recalled the similarity of the cues and looked him up at IMDB.
I'd have to rewatch 28 Days Later to see if he does it there.
I actually liked the cues, it's just that they were pretty memorable scenes. (The intro zombie chase in 28WL matches the Big Daddy-Kicks-Warehouse scene in K-A... the Suited-Capa-trying-to-beat-timer in Sunshine matches Hit Girl saving BD and KA in K-A... and others as well.)