The Royal Liverpool University Hospital is a major teaching and research hospital located in the city of Liverpool, England. It is the largest and busiest hospital in Merseyside and Cheshire, and has the largest emergency department of its kind in the UK. A major redevelopment of the hospital began in 2013 and was scheduled for completion in 2017, but construction problems and the 2018 collapse of main contractor Carillion meant it did not open until late 2022.