22.— (1) In a prosecution of a person for an offence under section 12 for refusing or failing to comply with a requirement to provide 2 specimens of his or her breath, it shall be a defence for the defendant to satisfy the court that there was a special and substantial reason for his or her refusal or failure and that, as soon as practicable after the refusal or failure concerned, he or she complied (or offered, but was not called upon, to comply) with a requirement under the section concerned in relation to the taking of a specimen of blood or the provision of a specimen of urine.

(2) In a prosecution of a person for an offence under section 12 or 14 for refusing or failing to comply with a requirement to permit a designated doctor or designated nurse to take a specimen of blood or for refusing or failing to comply with a requirement of a designated doctor or designated nurse in relation to the taking of a specimen of blood, it shall be a defence for the defendant to satisfy the court that there was a special and substantial reason for his or her refusal or failure and that, as soon as practicable after the refusal or failure concerned, he or she complied (or offered, but was not called upon, to comply) with a requirement under the section concerned in relation to the provision of a specimen of urine.

(3) Notwithstanding subsections (1) and (2), evidence may be given at the hearing of a charge of an offence under section 4 or 5 that the defendant refused or failed to comply with a requirement to provide 2 specimens of his or her breath, or that the defendant refused or failed to comply with a requirement to permit the taking of a specimen of his or her blood or to comply with a requirement of a designated doctor F42[or designated nurse] in relation to the taking of a specimen of blood, as the case may be.

(4) In a prosecution for an offence under section 11(4) for refusing or failing to perform a test, it is a defence for the defendant to satisfy the court that there was a special and substantial reason for his or her refusal or failure and that, as soon as practicable after the refusal or failure concerned, he or she complied (or offered, but was not called upon, to comply) with a requirement under the provision concerned in relation to the performance of a test.

F43[(4A) In a prosecution of a person for an offence under section 13B for refusing or failing to comply with a requirement to permit a designated doctor or designated nurse to take a specimen of blood or for refusing or failing to comply with a requirement of a designated doctor or designated nurse in relation to the taking of a specimen of blood, it is a defence for the defendant to satisfy the court that there was a special and substantial reason for his or her refusal or failure.]

(5) Notwithstanding subsection (4), evidence may be given at the hearing of a charge of an offence under section 4, 5 or 6 of the Road Traffic Act 2010 that the defendant failed to comply with a requirement to perform a test.