I can't believe it's not Butter, created in 1986 (United Kingdom), from 1324 sister brands and 16199 competing brands. I can't believe it's not Butter is a brand of UNILEVER PLC, listed on the stock exchange of Amsterdam. The International Securities Identification Number (ISIN) of UNILEVER PLC is GB00B10RZP78. I can't believe it's not Butter belongs to the Consumer Packaged Goods business sector.