I didn’t come across many Tyranid entry’s in Golden Demon 2014. Probably due to the limited number of categories they can be entered in. There were two present in the Monstrous Creature section and a handful more between Diorama and Duel. I wouldn’t really say there was one stand out entry, for a best bug in show award.
Tyranid Haruspex – Hive Fleet Kraken
Not from the same category but there is a Carifex in there.