My Lords, I have a great deal of sympathy with the main outline of the speech of the noble Baroness, Lady Parminter. I was a little less keen on the pasty that was identified as being available in Cornwall. I recall my brother-in-law, who is an expert on birds, arriving in Cornwall in the early 1990s and seeing a chough, which I did not see. He was certainly well versed in the significance of choughs to the Cornish position.
The purpose of the amendment that I have tabled is to get some sharpness of definition in the crucial area that we are concerned with. We all know that the issue of invasive species is of great significance. It is one of the causes of the loss of biodiversity and much of the world, and we have seen indications in this country of the extent to which that occurs. The annual cost of invasive non-native species to the economy is put at £1.3 billion, so we are not talking peanuts here.
I shall mention my own experience of this. I heard someone—I think it was the noble Lord, Lord Teverson—suggest that we could not mention Japanese knotweed. I am going to mention Japanese knotweed quite often. My acquaintance with the problem of Japanese knotweed was to see a person lose the value of their house, in an ordinary suburban area with absolutely no suggestion of any threat at all except of Japanese knotweed. The plant effectively reduced the price of their house from £350,000 to £50,000 in value. They simply had to get out of that house as they did not think that they could afford the costs of controlling the knotweed.
That was my introduction to local difficulties, but when I was in the department I became acutely aware, and I am sure that the Minister is well versed in this,
that whenever a group of people come together to discuss Japanese knotweed, the railway industry is going to be there in force, as indeed it was on every occasion when we discussed it, simply because of the sheer cost to the railway system in this country of keeping the wretched plant at bay.
We are not talking about trivial issues as far as the nation is concerned when it comes to certain aspects of non-native species in this country. For agriculture alone, the cost in England and Wales seems to be getting on for £1 billion. That is an awful lot of money being spent in seeking to control a plant. In the European Union, the annual cost of non-native species is €12 billion. We were gratified to hear at the Defra briefing this morning of the extent to which there was international movement and action on this, and that the European community was playing its full role in this. There were one or two interesting exceptions that we heard about, which raised an eyebrow or two; many of us thought that the Danish scarcely merited the kind of exemptions that we in this country could hardly get for particular products and local parts of the economy, but nevertheless the Danes had obviously put up a good case.
However, I want to emphasise that we have to get this right. I know when I say those words that it is not possible to get it right, because it is a continual battle against change, some of it produced by climate change, which accelerates the difficulties.
We support the clause. The reason we want to probe the Minister is obvious enough; the noble Baroness, Lady Parminter, did the task for me. Red kites were reintroduced at Woburn, not far from where I live. The first arrival of a red kite on a tree, resting and then taking off in all its glory, is something that I treasure. Of course I applaud the reintroduction of certain species, but I heard what the noble Lord, Lord Cameron, said about his anxiety about beavers. That shows the differences there can be between different parts of the community. People I have been talking to thought that beavers might help to restrict floods because they build dams to do so, whereas the noble Lord, Lord Cameron, thought that beaver dams might accelerate the problems. There you are, you pays your money and you takes your choice on that.
Before the Olympic Games, an absolute fortune was spent on clearing the site of my dear friend knotweed. The site had to be cleared of a lot of other very noxious things indeed. One of the great expenses of the Olympic Games was getting the site clear, but Japanese knotweed featured in that and cost £70 million to remove.
We must not underestimate the challenges which such species present. My amendment is tabled in order to get, and I am certain that the Minister will oblige the Committee by giving, a clearer definition of what the noble Baroness, Lady Parminter, asked for in the first place.