** Ladbrokes-owner Entain ENT.L down 1.7% at 675.4p; among top loser on London's bluechip index .FTSE
** Britain's accounting watchdog starts probe into KPMG's audit of Entain for the year ended Dec 2022
** KPMG UK spokesperson says will cooperate fully
** In 2024, ENT fell ~30%
(Reporting by Radhika Anilkumar in Bengaluru;)
((Radhika.Anilkumar@thomsonreuters.com;))