After you've sent in your application to be a police officer, a three-step process begins.
On receiving your application form, the force that you have applied to will check your eligibility and mark your responses to competency questions (if these are used by the force). If your application is successful, you will be invited to attend an assessment centre (step 2).
If you pass the assessment centre, you will then take a fitness test
Next, your references will be checked, you'll undergo a background, security, medical and eyesight checks.
Some forces may choose to run additional assessment stages, such as a second interview.