British American Tobacco is reducing its 47,000-strong global workforce by about one-fifth as part of its sweeping plan to bring down costs and simplify operations. By the end of this year, the maker of Dunhill cigarettes will have slashed 5,500 jobs and outsourced a further 3,500, according to an internal notice that lays bare the scale of change taking place at the tobacco giant. The numbers do not include BAT’s US business, which is operated through its subsidiary Reynolds American. Most other countries BAT operates in are affected by its ongoing restructuring program and the company detailed the extent of job cuts on Monday. It has pledged to make £600 million ($793 million) of annual cost savings by the end of 2028.