The fitness test is designed to assess whether you’ve got the stamina needed to be a police officer, not an Olympic athlete.
It involves a multi-stage shuttle run, also known as the ‘bleep test’, which is a physical test of your aerobic capacity (stamina). It involves running between two points that are 15 metres apart (a "shuttle"). The pace of each shuttle is synchronised with a pre-recorded audio tape that bleeps at set intervals - and speeds up during the test.
Some people worry about not being fit enough to pass the test but, as long as you’re reasonably fit and have prepared enough in advance, you should be fine.