US firms have swept aside UK rivals to secure the lead roles on the €1.1bn (£750m) acquisition of Greek mobile phone giant TIM Hellas – the first ever leveraged buyout in Greece.

Shearman & Sterling, Cleary Gottlieb Steen & Hamilton, Latham & Watkins and O’Melveny & Myers all sealed roles on the groundbreaking deal, with Allen & Overy (A&O) advising the debt providers.