Upcoming episodes, programme details and where to watch over the next seven days. All times are UK time.
New. The staff of London Ambulance Service attend to patients who have been sprayed with an unknown chemical before being called to manage a multi-storey flat fire.
New. The service is placed under pressure as all crews are diverted to a fire, and a medical technician draws on his own experiences to help a patient struggling with alcohol addiction.
New. Dispatchers Karen and Lucy face an overwhelming surge of urgent calls, while crews out on the road grow frustrated by frequent callers taking up valuable emergency resources.
New. A team in the Tactical Operations Centre responds to reports of an apparent shooting incident in south London, coordinating a response to reports of multiple casualties.