Clix
From Tardis Wiki, the free Doctor Who reference
Clix was a planet in the Raxas Alliance. It took its lead from Raxacoricofallapatorius, the most influential planet in the alliance. (TV: The Gift)
In 3764, a Raxan Alliance peace conference was held on Clix. The Ninth Doctor was invited to help with the difficult talks. Unbeknownst to the organisers, a Slitheen impersonating the Doctor arrived instead, with Rose Tyler whom she kidnapped. (COMIC: Doctormania)