First, I entirely agree that we should be planting more trees. In fact, my party’s manifesto stated that we wished to plant 11 million more trees over this Parliament. Trees are a great enhancement to our lives, but we need to ensure their planting and location, particularly in urban areas, because if we have avenues of trees it is often difficult for the emissions to go up, which causes a local problem. There are all sorts of reasons why we need to be careful about the way in which we plant our trees.
My Lords, in the Minister’s reply, mention was made of the Mayor of London. Is the Minister absolutely convinced that the mayor, together with the boroughs and the City of London, has the necessary powers to effect a pan-London improvement of the situation? Obviously, pollution does not respect borough boundaries and the impression locally is that, at the moment, the mayor does not have the requisite powers.