My Lords, it is good to know that the National Institute for Health Research would support a larger randomised study, but what the noble Viscount, Lord Ridley, said is true. The current evidence from the Cochrane analysis—the most robust method we know of analysing whether a product, device or a drug is effective against the desired outcome—is that, although the studies were small, 14 observational studies and two randomised trials show that e-cigarettes are more effective than nicotine patches or a placebo. Would the Minister agree that the industry should now also address a standard dosage of nicotine and ensure that the quality of the nicotine used in e-cigarettes is standardised across the industry to avoid subsequent risks?