Trouble at the top: the three people at centre of inquiry

JUSTINE CURRAN: The 47-year-old chief constable of Humberside Police began her policing career in 1988 when she joined Greater Manchester Police.

She served in a number of posts before moving to Merseyside Police to be operating superintendent for Toxteth.

She returned to Manchester in 2003 and spent six years there, before being appointed deputy chief constable of Tayside Police in February 2009 — taking the top job a year later when Kevin Mathieson stepped down.

Although her tenure at Tayside was dogged by controversy, crime figures did fall during her time in charge.

ANGELA WILSON: Ms Wilson joined Thames Valley Police in 1984 but returned to her native Tayside in 2002.

She became the region’s first female head of CID in 2006 and was appointed assistant chief constable in 2009 — a role she held until the creation of Police Scotland in 2013.

Ms Wilson, who is originally from Carnoustie, was a founder of the Scottish Women’s Development Forum, which helped women’s development within the police.

After the creation of Police Scotland Ms Wilson helped to coordinate the policing of major events such as the Ryder Cup and Commonwealth Games.

She retired last week.

GORDON SCOBBIE: The former deputy chief constable of Tayside Police retired from the force following the creation of Police Scotland in April 2013.

He joined Strathclyde Police in 1980 and was assistant chief constable of West Midlands Police for 18 months before being appointed deputy chief constable of Tayside Police in November 2010.

Mr Scobbie was also the lead UK officer on use of social media, responsible for coordinating how police monitor and use social networks such as Twitter and Facebook.

He is now a digital and social media consultant and is a director of a firm called MonkeyNutz Consulting Ltd.