Sullivan & Cromwell and Davis Polk & Wardwell have taken lead roles on BG Group’s inaugural debt offering into the US, with a $1bn (£640m) notes offer.

Sullivan advised BG Energy Capital on the deal, which marks the New York firm’s first mandate for the company. The firm advised on both English and US law, fielding a team led by London co-managing partner Vanessa Blackmore (pictured) and corporate partner Bill Plapinger.