The 1 Number 1 brand, founded in 2006 (United Kingdom), from 575 sister brands and 2767 competing brands. 1 Number 1 is a brand of IMPERIAL BRANDS PLC, listed on the stock exchange of Francfort. The International Securities Identification Number (ISIN) of IMPERIAL BRANDS PLC is GB0004544929. 1 Number 1 is part of the Tobacco Products activity sector.