Nick Ayerst joins the Lebanese restaurant chain owner from LEON, taking over from interim CEO Jean-Michel Orieux.
Al Cook will replace Bruce Cleaver as CEO at the global diamond corporation, while Cleaver moves to the role of co-chairman.
Steve Johnson will succeed Ian Durant on his retirement from the role at November’s annual general meeting.
Wael Sawan, currently head of Shell’s gas and renewables business, will take over from Ben van Beurden at the end of the year.
Mark Irwin will take the helm from Rupert Soames, who is retiring after nine years at the UK government contractor.
Dillon takes over the helm from Richard Johnson, who is retiring after eight years as the global sports retailer’s chief executive officer.
Cécile Nagel joins from EuroCCP and will be based in BNY Mellon Pershing’s London headquarters in Canary Wharf.
Khoury-Haq has been interim chief executive officer at the consumer co-operative group since March this year.
Eurostar Group has appointed Cazenave to succeed Jacques Damas as chief executive officer from 1 October this year.
Having announced in May that Nick Jones would be stepping down, the group has selected Jonathan Brown as Jones’ successor.