1. Introduction Critical care units across the UK treat over 161,000 patients every year, [1] with the median average intensive care unit (ICU) stay being 2.6 days and hospital stay being 19.3 days (although this can be months for many who require rehabilitation). The majority of these patients (79.6%) survive to hospital discharge; however, many report reduced health-related quality of life (HRQL) for months and even years after discharge.