Mr. Oliver Gilvarry:

I did not say that we were not looking at indices because doing so would be complex. My point was that, following the advice, we were of the view that a de minimis would have to be applied to make it legally robust. I am not saying that it would be too difficult to look at the indices, but if this legislation moves forward, it has to be in a framework that is robust and, if subject to challenge, best placed to withstand that.

Mr. Ashmore might discuss screening.