UK police also have a Fast Track system.
"The aim of the programme is to attract, identify and develop the most talented who wish to reach senior levels of leadership within the police service. They will bring new perspectives, diverse skills, have a positive influence on the continuous development of policing, and impact on the management and culture of the service.
The programme also supports individuals to advance to the rank of inspector within two years for serving constables and to reach the senior ranks of the service (at least superintendent).
Overall, it supports individuals’ continuing professional development to provide a cadre of officers with the skills, experience and capacity to reach the senior ranks in the service.
If you feel you have the potential and drive to become a fast track officer and reach senior levels in police leadership then Fast Track could be the programme for you"
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https://www.college.police.uk/career-learning/learning/courses/fast-track-programme-serving-constables\
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