Happy to be challenged on these numbers, as this isn't within my field of knowledge:

* UK government value of prevented fatality: £2M [0]

* UK government value of a quality-adjusted life-year for a single person: £70k -> ~£192 per day [1]

[0] https://www.lse.ac.uk/PBS/assets/documents/Estimating-the-mo...

[1] https://www.gov.uk/government/publications/the-green-book-ap...