They need to release the data and assumptions they’re basing their simulations on, because this will affect the entire world, not just the UK.
The current numbers have COVID-19 at something like 20x more deadly [than the flu] for people under 50. It’s not nothing. At scale, that’s a lot of people dying. Those numbers are also a reflection of the treatment being done in all the other areas of the world right now. Does their model adjust for an increased mortality rate that would surely occur in an overwhelmed medical system? Are they assuming a nearly perfectly executed quarantine of the elderly?
They need to share their data and assumptions.