Biosecurity and Infectious Diseases

Baroness Hayman of Ullock Excerpts

Thursday 18th January 2024 Lords Chamber

[Baroness Hayman of Ullock (Lab)]

My Lords, I declare my interests as set out in the register and that I am co-chair of the APPG for the Timber Industries. I thank the noble Lord, Lord Trees, for his excellent introduction and for bringing this important debate to us today; and I very much look forward to hearing the Minister’s maiden speech.

The debate has focused on a number of areas of concern. First, on health, noble Lords talked about how Covid-19 exposed a lack of preparedness for biological hazards, and about our vulnerability, which my noble friend Lord Browne of Ladyton particularly pointed out. My noble friend Lord Stansgate talked about the importance of One Health principles around people, animals, plants and ecosystems, which was then picked up by other noble Lords. We also heard that the number of emerging zoonoses is increasing globally; several noble Lords talked about the global challenges we face. Most notably, the noble Baroness, Lady Hayman, talked about the global impacts on health, as did the noble Lord, Lord Rees of Ludlow. My noble friend Lord Davies of Brixton also drew attention to the fact that infectious diseases do not, of course, recognise borders.

In this challenging context, we need to recognise the importance of understanding, monitoring and preparing for any future pandemic. The threat of an influenza pandemic, for example, has regularly topped the UK National Risk Register for most impactful hazards. We need to understand the evolutionary pathways by which things such as avian flu could jump to humans and how non-human flu could become a human pandemic; and we need better comprehension of the consequences of failing to address the rise of antimicrobial resistance infections. I welcome back the noble Baroness, Lady Murphy, and her speech on this issue.

Invasive non-native species of plants and animals are one of the greatest global threats to biodiversity. Their introduction typically leads to a reduction in species richness and abundance, and degradation of the environment; they often outcompete and prey on native species, bringing disease and pathogens. FERA has been mentioned in the debate, and the important briefing that it sent to noble Lords. It talked of the significant increases in the volume of plants and plant material potentially infected with harmful organisms being sent from the Plant Health and Seeds Inspectorate to its diagnostics laboratories. Every interception is a potential biosecurity risk that has been successfully neutralised, but a disease has to enter the country only once and not get picked up in order to become established and have a potentially devastating impact on our economy and biodiversity. For example, within our borders, the number of new pests and diseases affecting trees in the UK has increased by almost 500% over the last 20 years.

RSPCA and Born Free research has highlighted that zoonotic disease spread by the import of exotic pets into the UK is an overlooked risk to human health. Several European countries have adopted a positive list of species that can be kept, provided that the conditions meet welfare and safety criteria, with potential exemptions for conservation work in zoos. Will the Government consider this precautionary approach? Government should ensure that the same level of sanitary protection applies to imported wildlife as applies to our livestock and fish industries, with improved border controls, quarantine and testing for pathogens identified as threats to UK biodiversity.

The noble Earl, Lord Caithness, and the noble Lord, Lord Carrington, talked about the need for imports to be managed correctly, and the noble Lord, Lord Krebs, talked about border controls and mentioned Dover in particular. I therefore wonder whether the Minister saw yesterday’s report in Farmers Weekly about the Dover Port Health Authority urging Defra to reconsider plans for a 70% funding cut to its work in seizing illegal meat imports, a move that the authority says could jeopardise efforts to keep African swine fever out of the country.

The National Pig Association says that cutting the budget could be “catastrophic” for the pig sector and the British Poultry Council has stated that the current situation for poultry meat businesses remains critical following avian flu, drastic increases in costs of production, energy and feed, labour shortages and difficulties with trading. Are the Government looking at the areas that they have requested—investment in robust biosecurity and the viability of vaccination in commercial property?

There are many examples of invasive species causing huge problems for biodiversity, and we have heard about many of them today. Signal crayfish carry crayfish plague, which kills the UK’s only native species, the white-clawed crayfish, which is now recognised as globally endangered. Buglife’s “PotWatch” survey identifies increased reports of non-native flatworms, which can reduce local earthworm populations by 20%. Invasive pests, pathogens and diseases are commonly spread through horticultural imports. The noble Lord, Lord Trees, mentioned the huge increase in trade and imports and the impact of this. We know that invasives can travel in live plants and plant products, through the soil and the packaging they are conveyed in, and that routes for invasives to spread often bring about significant breaches of UK biosecurity.

We have heard that climate change is exacerbating these risks, as it makes it easier for invasive species from warmer climates to establish themselves in the UK. Furthermore, as new trade routes and freeports open, there is a greater chance of new species entering the UK, as biosecurity measures at international borders have not kept pace with the growing volume, diversity and origins of global trade and travel.

Trees have been a central part of today’s debate. The Woodland Trust has been mentioned by noble Lords; it has clearly demonstrated that the UK has an unsustainable rate of new tree threats, significantly compromising government aims, as we have heard, to create new woods and trees for biodiversity, carbon and people. Many noble Lords have mentioned the importance of tree diseases such as ash dieback—a clear example of how tree imports can have a catastrophic impact on our trees and woodlands. We now expect to lose anything between 50% and 80% of our existing ash trees. I am sure that anyone who walks in the countryside or even drives along its roads can see the sad state of our ash trees. We also have severe dieback of larch trees in the UK, which has been mentioned. The problem is that it can jump to other species, which is why so many larch trees are being cut down. When I walk my dog in the woods in Cumbria, it is heartbreaking—areas are completely devastated, with every single tree gone.

The cost of dealing with new pests and diseases often falls to farmers and land managers as well as to government, and ash dieback has been predicted to cost around £15 billion. To put this into perspective, that is almost twice the estimated cost of the 2001 foot and mouth outbreak. We have to protect our precious woodlands and trees from these increasing pest and pathogen arrivals. Prevention is cheaper than cure. As the noble Baroness, Lady Walmsley, said, the overall ambition must be to reduce reliance on imports, properly equipping nurseries with skills, labour and funding.

Buglife sent a good briefing on how concerned it is that current phytosanitary requirements for imported goods are simply not fit for purpose and are significantly weaker than the exporting standards required to trade to the EU. Can the Minister explain why this would be the case? It is really difficult to detect many small species, such as ants, snails, slugs and beetles, in imports. Will the Minister look at Buglife’s suggestion that the most suitable preventive measure is to end the importation of soils and potted plants containing soil? Other countries do it, so why is this not something that the UK could look at?

We have also heard about the Government’s commitment to a three-year trial of an invasive species inspectorate. As this trial is now nearly complete and inspections have revealed high levels of non-compliance, are the Government thinking of making this permanent? It would clearly make a huge difference.

In conclusion, public awareness was mentioned by a number of noble Lords, specifically the noble Lord, Lord de Clifford. This is an important part of the battle against our problems with biosecurity. There is a compelling need for the UK Government, industry and society as a whole to invest in redoubling efforts. We need a proper, evidenced-based way to identify emergent issues and tackle them.