We propose a new form of the rotating C-metric with cosmological constant,
which generalises the form found by Hong and Teo for the Ricci-flat case. This
solution describes the entire class of spherical black holes undergoing
rotation and acceleration in dS or AdS space-time. The new form allows us to
identify the complete ranges of coordinates and parameters of this solution. We
perform a systematic study of its geometrical and physical properties, and of
the various limiting cases that arise from it.Comment: 36 pages, 5 figures; v2: references added; as accepted for
publication in Phys. Rev.