Andy Davidson

PC Andy Davidson was Gwen Cooper's former police partner.

Biography
Andy Davidson worked with Gwen Cooper during her time as a police officer. Andy had crush on her, which lead him to feel some jealousy towards Gwen's boyfriend and eventual husband, Rhys. (TW: Adrift)

After Gwen had joined Torchwood Three, she met Andy again outside a nightclub where a man had been killed by Carys Fletcher, who was possessed by Sex Gas. (TW: Day One) Like Gwen's boyfriend Rhys, he believed that she had been promoted to "Special Ops". They met up at the scene of Guy Wildman's death. (TWN: Another Life)

During the opening of the Cardiff spacetime rift, he requested Gwen's help after a Roman soldier had fallen through time only to murder two men and subsequently be arrested. Jack and Gwen talked very frankly about what happened in front of him. (TW: End of Days)

Andy was present at the murder scene of a man who was killed by Time Agent, John Hart. (TW: Kiss Kiss, Bang Bang)

Andy later assisted Gwen with her investigation of a sudden disappearance. During this, he revealed his affection for her and jealousy toward Rhys, which Gwen discovered to be his reason for not attending her recent wedding. (TW: Adrift)

He was also made aware that Gwen worked for Torchwood and showed interest in joining, but Gwen did not want him to. (TW: Adrift) Later, Andy called upon Gwen for assistance when Weevils begin attacking his police station and despite his jealousy over Gwen, worked closely with Rhys. (TW: Exit Wounds)

He was at the aftermath of the bomb which was inside Captain Jack Harkness and destroyed part of Cardiff Bay. He also helped Johnson find Gwen Cooper, being told she was a terrorist, by taking her to Gwen's flat. Gwen shot out the truck's tires and escaped with Rhys. (TW: Children of Earth: Day Two)

He joined in the riot against the army to protect the children. (TW: Children of Earth: Day Five)

Personality
Andy found glamorous police programmes like CSI: Crime Scene Investigation ridiculous and seemed to be somewhat put out by Gwen's more inquisitive nature. (TW: Everything Changes)

He was a pushover when it came to Gwen Cooper. Because he fancied her he did not attend her wedding because jealousy of Rhys Williams.