FILE PICTURE: Chocolate packets are displayed in the showroom at the headquarters of Nestle in Vevey, Switzerland, February 18 2016. REUTERS/Pierre Albouy

LONDON (Reuters) - U.S. activist investor Third Point called on the board of Swiss company Nestle NESN.S to clarify its corporate strategy and speed up the disposal of "ill-fitting businesses", in a letter to investors seen by Reuters.

Third Point, founded by investor Dan Loeb, also said Nestle could accelerate and even expand its share buyback programme, the letter showed.