Mr. Simon Osman:

I agree with most of what Mr. O'Brien said in terms of the technology. It is adaptable and customisable but there is time and effort involved. As someone who develops software, time is always our biggest battle. It is not a matter of throwing teams and teams of developers at it because it gets inefficient at a certain scale. Regarding the ability to build platforms and technology, there is an element of that, and the more developers there are, the more that can be done. Equally, however, with a solution that needs to be pulled together and that is compliant between the science, the medical and the technology to develop it, there are lots of points where there are what I would call interfaces, which need to be thought through. From our perspective, that is our advantage. We started developing 13 or 14 months ago, when we saw where this was heading.

In terms of the experience with the NHS, from our perspective, we are interoperating with the NHS as a private company. We are not building the app and, frankly, we have some views about how that application is being put together at the moment. I can only really talk about the cost and, again, I concur with Mr. O'Brien that it depends on frequency and the number of users. That tells people what scale their platform needs to look at from a computing point of view, and then there are all the data sensitivity aspects, storage and making sure that it runs. Then, there is the verification piece. To create digital ID, there is a cross between the individual and the-----