A police officer has been fired after sending videos of himself masturbating in his uniform to a 'vulnerable' woman.
PC Christopher Leach, 37, was dismissed for "improper sexual relationship" with the woman, who he met after she witnessed a crime.
The divorcee admitted filming two videos in the toilets of his police station while in police uniform - saying it gave him a "thrill".
A disciplinary hearing was told PC Leach filmed himself masturbating inside Cathays police station in Cardiff.
He then sent the vile videos to the woman, 35, after working his shifts as a uniformed police constable.
PC Leach admitted sending the messages - but denied filming them while he was on duty.
He told a misconduct hearing that he filmed the explicit videos before his shift started, kept them on his phone and sent them to the woman if she asked.
After he was caught, he told senior officers that when he was unable to see her, they would communicate by sending explicit messages and videos to each other.
The hearing was told the officer came into contact with the woman because of his police work - and that she was "vulnerable to an abuse of trust or power."
PC Leach, who has worked for the force for five years, denied misconduct but he was dismissed without notice by a disciplinary panel.
Jonathan Walters, representing South Wales Police, told the hearing in Cardiff that PC Leach met the woman while following up a crime report and that she was a "potential witness".
PC Leach went to her home address to ask her to sign a witness statement and gave her his personal phone number.
PC Leach told the hearing he wanted to forge a friendship because the two "had a lot in common" and were both "professional people".
He said he was in the process of separating from his ex-wife with whom he had a young son.
But Mr Walters said: "It was Leach's intention to begin a sexual relationship."
He said that PC Leach - who was in a relationship with another police officer - set out to "weave his web" and "blur the lines between a professional and personal relationship".
He read texts PC Leach sent to the woman describing her as "stunning" and "gorgeous" - and asked if she wanted to go for a coffee.
PC Leach claimed his comments were "harmless flirting" between two friends and he was not found to have had an improper sexual relationship with the woman.
He was found to have made five breaches of standards of professional behaviour amounting to gross misconduct.
PC Leach is also found proven of two breaches of "honesty and integrity", by seeking to mislead his supervisor by failing to disclose the full extent of contact between himself and the woman.
The panel concluded: "The only appropriate and proportionate outcome is that of his dismissal from the force without notice."
