There's a link in a sibling comment pointing to data from 2019 January where 151 out of 1033 adult critical care beds in London were free (14.6%), and in Januar

There's a link in a sibling comment pointing to data from 2019 January where 151 out of 1033 adult critical care beds in London were free (14.6%), and in January 2020 146 out of 1034 were free