Mark Rhys has made his association with the Hong Kong and Shanghai Hotel Group official as he takes up the position of chief financial officer. Rhys had been working for the group on a consultancy basis for the last three years. Since August last year -- when previous CFO, Rodney Smyth left the Group to run CLSA -- Rhys has done many of the duties of the CFO with the help of Roger Henderson, the group's company secretary.