Original: It is in the interest of the candidate to ascertain that the car they intend to use is insured for the purpose of taking the Taxi/Private Hire test as they will be required to sign a document to that effect.
Simplified: It is in the interest of the applicant to find out that the car they intend to use is insured for the purpose of taking the Taxi/Private Hire test as they will be required to sign a document to that effect.
Simplified: The candidate is advised to check that the car they intend to use is insured to take the Taxi/Private Hire test because they will need to sign a document confirming this.
Simplified: It is a good idea for the candidate to determine whether the car they will use is insured for taking the Taxi/Private Hire test as they will be required to sign a document that confirms the car is insured.