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Road Safety Bill [Lords]

The hon. Gentleman is making a good point, but I want to return to the point raised by the hon. Member for Rochdale (Paul Rowen). The hon. Gentleman has prayed in aid the 1967 legislation, which concerns excess alcohol in the blood. The problem involves the thresholds for such measurements, because some illegal drugs, such as heroin, can be present in the body for between three and six months after use. I suspect that most medical experts would recognise that the presence of heroin in the body of someone who last used the drug three months earlier would not impair their driving. Although the act of taking the drug is illegal, it would be made a further illegal act under new clause 1.