Simmons & Simmons and LeBoeuf Lamb Greene & MacRae have taken the lead advisory roles on Shell's proposed sale of an oil refinery in the south of France for $700m (£345m).

Simmons took the lead for Shell under corporate partner Paul Exley. as the fuels giant moves to sell its Berre l'Etang refinery to petrochemical group Basell.

The mandate marks the latest major deal for Shell on which SImmons has advised, with the top 10 City law firm having also acted on the client's proposed $475m (£233m) sale of the Petit Couronne and Reichstett Vendenheim refineries earlier this month.