Australian duo Gilbert & Tobin (G&T) and Allens Arthur Robinson have bagged high-profile lead roles on the $17.5bn (£8.99bn) merger between Westpac Banking Co and domestic rival St George Bank, writes The American Lawyer.

Westpac – Australia’s fourth-largest bank – turned to G&T, while St George – the country’s fifth-largest lender – instructed Allens Arthur.