Network Ten has been dealt a blow with its popular comedy improvisation TV show Thank God You're Here moving to the Seven Network.

Seven on Tuesday announced that the program, created by Working Dog, would form part of its 2009 line-up.

Shane Bourne, who also appears in the Seven drama City Homicide, will remain as host, the network said.

Judge and co-creator Tom Gleisner said he believed the move would expose them to a new audience.

"Having taken a year off it felt right to try some new things with the show," Gleisner said in a statement.

Seven chief executive David Leckie said he had wanted to do something with Working Dog for years and hoped it would the beginning of a lasting relationship.

"They are the best in the business at what they do and that's why they'll fit in just perfectly at Seven," Leckie said.

Thank God You're Here ran on Ten in 2006 and 2007 and was one of Ten's highest rating programs.

It features celebrities walking through a door into an unknown situation, and then they have to improvise their way through the scene.

Previous guests have included Stephen Curry, Fifi Box, Peter Helliar and Cal Wilson.

Working Dog has had a long running relationship with Ten with shows like The Panel which ran from 1998 until 2004.