Allen & Overy (A&O) has once again come out on top of the latest global project finance league tables, leading its rivals by value and volume for the first half of 2007.

Research by Infrastructure Journal shows A&O on top after advising on 35 deals worth a combined $27.4bn (£13.4bn). Clifford Chance (CC) is in second place by value, with 24 deals worth $23.2bn (£11.3bn), while New York law firm Shearman & Sterling completes the top three by value after acting on deals worth $15.3bn (£7.5bn).