37 Furthermore, the DPP relied on the legislative history of s 56 to support his construction. The original form of s 56 compelled doctors to take blood samples, regardless of whether the person allowed it. Under that regime, Dr Lew would have been obliged to take a blood sample from Dover. Had he not done so, he would have committed an offence. Thus, either a blood sample would have been taken or an offence committed. As mentioned above, in 1991, in response to the concerns of the medical community,[31] the current provisions were introduced so that medical practitioners are no longer obliged to take samples from patients. The DPP submitted that this legislative reform was not intended to breach the dichotomy created that a blood sample is either taken, or an offence committed. It cannot be inferred, so it was argued, that the amendment created a third option, namely, where blood is not taken but no offence is committed.