If my right hon. Friend gives me a short amount of time, I will come to exactly what he is after.
NH believes that this improved practice over the past couple of years is due to sharing best practice between regions, more detailed data on targeted litter collections, and improved engagement with local authorities and authorities that clear litter on A roads, including Transport for London. We are currently developing the third road investment strategy, and continue to explore further metrics for inclusion in it—my right hon. Friend might want to put some specific KSIs in. That will include a performance specification and possible improvements to the specific metrics, including on litter. I will write to him on the specifics of what National Highways has to report, on what it is held accountable for and on those KPIs.