Shell has concluded a comprehensive review of its global external legal advisers, with a host of UK and US firms winning appointments to advise the world’s largest company by revenue.

Though a full breakdown of all appointments was not immediately available, Shell confirmed 11 firms – Allen & Overy (A&O), Baker & McKenzie, Clifford Chance (CC), CMS Cameron McKenna, Debevoise & Plimpton, Holman Fenwick & Willan, King & Spalding, Linklaters, Norton Rose, Simmons & Simmons and Dentons – are set to advise the oil giant in three jurisdictions or more.