The 2002 film "28 Days Later" is mainly set in which European country?

The 2002 film "28 Days Later" is mainly set in the United Kingdom. The movie depicts the aftermath of a virus outbreak that transforms people into rabid and aggressive beings. It follows the journey of a few survivors as they navigate through the deserted streets of London and later venture into the countryside. The film's emphasis on iconic locations like Westminster Bridge and Piccadilly Circus, as well as its incorporation of British institutions such as the military and government, firmly establish the United Kingdom as the primary setting for this gripping and intense story.