 Diageo PLC LSE:DGE said it is to carry out a share buyback worth 1.7bn as the third part of a previously announced capital returns programme. The Johnnie Walker, Smirnoff and Guinness maker had already bought back shares totalling 2.25bn on 31 January 2020 and 11 February 2022 as part of the 4.5bn exercise, which is scheduled to finish by the end of its financial year to June 2023. 