Two women and one man were taken to hospital following a three-vehicle smash in Farndon on Wednesday (July 20).
The collision occurred at the crossroads between the A534 and B5130 shortly before 5.15pm.
One of the casualties was airlifted to Aintree Hospital, while two were transported to the Countess of Chester Hospital by ambulance.
A passing off-duty paramedic from London Ambulance Service who stopped to help has been praised for his 'fabulous' support in helping to co-ordinate the emergency service response.
A spokeswoman for North West Ambulance Service said: "One female was complaining of hip and chest pain, one female had lower back pain and briefly lost consciousness and the male had a leg injury.
"We had an off-duty paramedic on the telephone telling us what we needed to send which was fabulous."
None of the injuries are believed to be life-threatening.
Anyone with any information about the incident is asked to call police on 101 using incident number 791 of July 20, 2016.