State Express 555, known as 555 (Three-Fives), is a Westminster, London-based cigarette originally manufactured in the United Kingdom by the Ardath Tobacco Company.

The company was created in the late 19th century in London, England, and was originally called Albert Levy & Thomas.

[3] The Ardath Tobacco Company Limited was originally located at 62 Leadenhall Street in London and called La Casa de Habana (The House of Havana) until 1895, when it changed its name to the present day version.

Ardath's brands continued to be sold in Britain; they were granted a Royal Warrant by King George VI in 1946 and again later by Queen Elizabeth II.

[2] In the 1920s and 1930s BAT held a dominant position in the Chinese market with State Express 555 playing a key role.

On the day of the Proclamation of the People's Republic of China, Mao Zedong and Liu Shaoqi reportedly smoked 555 cigarettes.

Even after State Express 555 withdrew its sponsorship, Subaru continued to use the 555 blue and yellow colour scheme as its WRC livery until its withdrawal, but with the manufacturer's own logos in place of the 555 brand.

They opted to have the Lucky Strike brand on the left of the car and 555 World Racing on the right, with a zip going along the middle of the nose.