Chief Commissioner Cameron Miekelson (Series 1-5)
Cameron Miekelson is incredibly proud to be the very first Chief Commissioner of the newly unified Scottish Police Force. Having been "in the Police, man and boy... well, not boy... more like 'I've been in the Police man and younger man'" he understands how important his role is.
He feels that merging the eight regional Police constabularies is very much like a marriage, and The Chief Commissioner is there to ensure that Lothian and Borders don't come home one day to find Tayside in bed with "Steve who says he is there to fix the shed. We don't even have a shed."
Having been through a messy divorce himself, Cameron Miekelson is determined to make a success of the Scottish Police Force.
PC Jack McLaren (Series 1-5)
A fitness fanatic and martial arts expert, PC Jack McLaren is a model Policeman. He loves his job, with ambitions to climb the ladder and explore other areas of policing such as Armed Response or Undercover Detective. He is comfortable dealing with the public, particularly the attractive female public, and is a rather likeable cheeky-chappy.
He has been partnered by PC Sarah Fletcher for a few years now and their relationship is very much that of an old, bickering couple. If Jack has a weakness, and he would not admit that he has, it is his refusal to admit failure in any outcome.
PC Sarah Fletcher (Series 1-5)
The warm, welcoming face of the Scottish Police Force. She sees the best in people, regarding her job as a way to help those in need rather than enforce the law.
Fletcher's regular partner PC Jack McLaren might be the muscle of the outfit, but Sarah is the soft word and the mint imperial from the pocket. Yet it is easily to be fooled. While her words might be soft, they hide a sharp wit, often defusing a situation or disarming a suspect with a gently stinging rebuke.
PC Jane Mackay (Series 1-5)
PC Jane McKay is enjoying her transfer from the mean streets of Glasgow to the more sedate environs of the Scottish countryside. Gone are the girl's holidays to Ibiza and the living in a "kind of squat in an old bread factory", replaced by a quiet cottage and dreams of opening a little tearoom. Perhaps even owning a few pigs.
She is keen to learn all she can about rural policing from her new partner PC Charlie McIntosh, fascinated by his advice on animal husbandry and ferry timetables.
PC Charlie McIntosh (Series 1-5)
Having lived his entire life in the countryside, PC Charlie McIntosh may seem rather naive, a lovable country bumpkin. But out in the wilds of Scotland, there is no one as experienced, effective or as dedicated as Charlie.
His knowledge of sheep markings, crop rotation and local fêtes might seem twee, but they are invaluable when policing rural Scotland. Though his favourite things might be "warm slippers" or "a falconry display", he is enamoured by the stories of his new partner PC Jane McKay, fresh from the big city of Glasgow.
To Charlie, tales of "macaroni pies" and "Jaegerbombs" are like science fiction.
PC Surjit Singh (Series 1-5)
In the Oxford English Dictionary, under the word "Policeman" there should be a photo of PC Surjit Singh. There is no law that PC Singh doesn't know. And while he may be in the Traffic Division at the moment, his unquenchable appetite for promotion combined with a cool self-confidence will soon see Surjit rise through the ranks.
Will there be a Chief Commissioner Surjit Singh one day? Probably. But for the moment PC Singh is stuck with the rookie PC Hugh McKirdy, policing Scotland's roads.
PC Hugh McKirdy (Series 1-5)
New to the Scottish Police Force, and the Traffic Division, PC Hugh McKirdy makes up for his lack of experience with a boundless enthusiasm. Having grown up in a small town he is a bit of a "boy racer", though now he polices Scotland's roads rather than speeds along them.
He counts himself extremely lucky to be partnered with PC Surjit Singh, an experienced traffic officer, who Hugh regards as "The Machine". While his thirst for knowledge may sometimes wear his partner down "Why is there not a full teaspoon of sugar in a sachet? How do they get the cardboard tube into a toilet roll?" he is determined to learn as much as he can from PC Singh.
Officer/Acting Sgt. Ken Beattie (Series 1-5)
Ken dreams of one day being "a real Policeman". As a Volunteer Officer, Ken acts as unpaid support to Scottish Police Force, often leaving himself out-of-pocket as he helps those most in need.
Kind-hearted and generous, Ken is happy to wash the socks of the homeless and buy theatre tickets for prostitutes.
As much as he would love to be paid as a full officer, he has failed the entrance exam four times, always on the physical test. But Ken is undeterred, struggling with a fitness and weight-loss plan. But he finds it hard fitting it around his volunteering work, while the abuse he receives from members of the public does little to bolster his confidence.
Maggie LeBeau (Series 1-5)
Maggie LeBeau is often the first point of contact for the public seeking Police help. As the operator on the other end of a 999 call, or a 101 call if it's not too serious, Maggie is a hugely important wheel on the Scottish Police Force wagon.
Cool, calm and collected, Maggie deals with all the Scottish public throw at her, from the reporting of serious crime angry callers complaining that EastEnders has been moved for Sportscene. Though she loves being part of the force, Maggie would never dream of swapping her job with a street officer. "Mainly because of the weather. I'm nice and cosy in here every day."
Sergeant Karen Ann Millar (Series 1-5)
Sergeant Karen Ann Millar is one of the Scottish Police Force's best officers. Courteous, knowledgeable, straight-forward and eloquent, she is everything you could want from your Police force. However a mysterious mistake in her past means that now Sgt Millar spends her days behind the desk of a local Police station.
Yet, whether it is dealing with miscreants in her holding cells or members of the public at the front desk, like her regular irritant Bobby Muir, she is never less than professional.
Bobby Muir (Series 1-5)
Bobby often keeps the Scot Squad officers busy: particular Sergeant Karen Millar, for whom he has a never-ending series of miniscule problems and mind-numbing questions.