Imperial College London models showing a minimum of 1.1 million deaths in USA and 250k deaths in the UK. This is with the most extreme social control to stop the spreading of the virus. This is the BEST POSSIBLE MODEL WITH THE MOST UNREALISTIC ASSUMPTIONS.
https://www.imperial.ac.uk/media/imperial-college/medicine/sph/ide/gida-fellowships/Imperial-College-COVID19-NPI-modelling-16-03-2020.pdf