You are at an incident where a casualty is unconscious. Their breathing should be checked. This should be done for at least

Explanation: Once the airway is open, check breathing. Listen and feel for breath. Do this by placing your cheek over their mouth and nose, and look to see if the chest rises. This should be done for up to 10 seconds.

Category: Incidents, Accidents and Emergencies

References: The Official DVSA Guide to Driving: Section 16, Highway Code: Page 132