Some streets do not have the word Street , Road or Avenue after the name. Examples include Haymarket , Pall Mall and Whitehall . London is so old that it is NOT based on a grid system. Traffic drives on the left. You use the subway to cross the road and take the tube to go shopping.
People walk on the pavement rather than a sidewalk.
All roads are paved in the North American sense so the term is never used. Zip Codes are called Postal Codes . In England zips are only found on clothes and bags. Striped pedestrian crossings are called Zebra Crossings . Transport London's Underground system is called the tube .