My Lords, it is a great privilege to follow the noble Baroness, Lady Hayman, and support all the amendments in this group in her name. I speak particularly to Amendments 201 and 210 which, as she said, refer specifically to using the purchasing power of the NHS to drive this agenda. Given how brilliantly she has set out the case, I shall be extremely concise.
There are two evidence-based reasons why these amendments are important. The first, as the noble Baroness said, is because the health consequences of the environmental crisis are increasingly clear. The Royal Society and the Academy of Medical Sciences laid all of those out. Whether on heat-related deaths, the disruption to care through climate emergencies, the increased risk of vector-borne infectious diseases, or the fact that up to a third of preventable asthma cases may be linked to the consequences of air pollution, the health case for action is clear. The second evidence-based reason, again as we have just heard, is that unfortunately healthcare itself is not blameless. It is part of the problem as well as part of a solution. By one estimate, if all the health systems in the world were their own country, they would be the fifth-largest greenhouse gas emitter on the planet. Therefore, the NHS must get its act together, given that it contributes 4% to 5% of our country’s emissions.
Those are the two evidence-based reasons. The NHS has stepped up in the way that the noble Baroness has set out. An expert panel led by the brilliant Dr Nick Watts made it the first health service in the world to charter a practical blueprint to net zero, but to do that, we must recognise that only about 28% of the carbon footprint of the NHS arises directly from care being provided. Another 10 percentage points are associated with travel on the part of patients, staff and visitors, but 62% of the carbon footprint arises from the supply chain—the medicines, the devices, the anaesthetic gases, the asthma inhalers, that the NHS uses, which it procures from 80,000-plus suppliers.
I am grateful to the noble Lord, Lord Prior of Brampton, and the noble Baronesses, Lady Young of Old Scone and Lady Hayman, for their support of my Amendments 201 and 210. Their purpose is simply to harness the £150 billion of purchasing power that will flow through either the new NHS payment system or the procurement rules to achieve the two evidence-based rationales that we have been discussing.