(written from a Production point of view)
Bob Shuttleworth is an actor who was a regular background extra on several episodes of Star Trek: Voyager. He received no on-screen credits for his appearances. Two costumes worn by Shuttleworth, a Starfleet officer uniform and the Krenim uniform, were sold off on the It's A Wrap! sale and auction on eBay. 
Shuttleworth has found his way into the film business after studying the book "Back to One: The Movie Extras Guidebook" by fellow Star Trek: Voyager extra Cullen Chambers, with whom he has appeared in several productions and commercials.
Outside Star Trek Shuttleworth has appeared in the acclaimed television drama If These Walls Could Talk (1996, with Aaron Lustig, Vaughn Armstrong, Robin Gammell, and Jack Kehler) and in a television commercial for diet coke in 2007.
Uncredited Star Trek appearances