This list of cultural icons of England is a list of people and things from any period which are independently considered to be cultural icons characteristic of England.
The first written record of the word "sandwich" appeared in Edward Gibbons (1737–1794), English author, scholar, and historian, journal on November 24, 1762. 'I dined at the Cocoa Tree ... That respectable body affords every evening a sight truly English. Twenty or thirty of the first men in the kingdom ... supping at little tables ... upon a bit of cold meat, or a Sandwich.'
The same apparatus allowing you to read these words, a product of extractive resource management and 20th century capital and nation-state formation, has allowed Coldplay to exist in the collective consciousness as a cultural icon. Whether you love or hate Coldplay, no one needs to explain their existence to you.