There are at least three bands called Circa: 1. A drum and bass producer based in Sheffield. He is featured on the Hospital roecords off shoot's (Med School) album: New Blood/ 2.
Along with the march of December 2005 came in the band CIRCA. A sketch of desire to create a music circling around heavy rock riffs but with a melodic approach and to finally play their hearts out, pushed Rey Olarte (drummer) and Sam Salantes (guitars) to set-off a new band. They were formerly known as milk and money and the new band name followed after a couple of choices from a list of names.

Read more about Circa on Last.fm.