From Worms Knowledge Base
Andy Davidson is the man who came up with the core concept of Worms. He was also responsible for programming the Amiga versions of Worms and Worms: The Directors Cut. He left Team17 shortly after the release of Worms Armageddon in 1999 due to creative differences, but returned in 2012 to work on new, non-Worms related projects.
He continued working on improvements for WormsDC long after the game was released. His current personal build it as v1.5.