HELEN WHITE (Labour): I'm not on the Health Committee, but I was the counsel in the Air New Zealand case, which was the test case on drug testing, and then I was also counsel on Toll, which was the second case in the run. So I do know rather a lot about drug testing. In the original case, I remember John Haigh QC, who was a very lovely man, and he described exactly the risk of what has been described here: that people would actually use inventive ways to get round the situation, and they would use synthetic urine, or somebody else's. And actually, at that point, he was reassured by the expert witness, who was in favour of drug testing, that gold standard testing would mean that no one who did a proper drug test in a proper, robust way would actually be able to pull the wool over the eyes of an employer. So as long as an employer is paying for the gold standard test, that simply should not occur, according to the experts. What has probably happened is there's been an insidious creep in this area, so that there are a lot of tests that aren't necessarily up to scratch in terms of their science. 