I am afraid that the hon. Gentleman will have to wait for that to happen.
I referred to a broad geographic spread. That was carefully thought through, as we want to see exactly how the system works across the country, and the pilots will ensure that that happens. The expansion of the pilots, and our plan to do more piloting in 2019-20, is how the Government are listening to the voice of local councils. The precise benefit to the areas involved will depend on the economic growth that they achieve. I am very keen to see what we can learn from these and the other pilots. We should be clear: the system of business rates retention is helping local authorities to benefit from the proceeds of growth.