Clifford Chance (CC) and Freshfields Bruckhaus Deringer have both scored roles on the proposed merger of EADS and BAE Systems, which is set to create an aerospace and defence giant worth $45bn (£27bn).

Freshfields is acting for BAE, led by senior partner Will Lawes, while French outfit Darrois Villey Maillot Brochier is leading for EADS, with CC providing UK advice.

Darrois' team is led by founding partner Alain Maillot and M&A partner Bertrand Cardi, while the CC team is headed up by global corporate head Matthew Layton, alongside corporate partners Patrick Sarch and Lee Coney.

Netherlands firm Nauta Dutilh is advising EADS on Dutch matters, with Amsterdam-based corporate partner Hein Hooghoudt leading the team, while Wall Street firm Wachtell Lipton Rosen & Katz has been instructed on US issues, fielding a team led by corporate partners Adam Emmerich and David Lam.

The two companies announced they were in merger talks yesterday (12 September) with a view to creating an aerospace, defence and security group that would rival US giant Boeing. It is estimated that potential sales of the combination would be worth about $100bn (£62bn). Both companies already share joint ventures in aircraft manufacturer Eurofighter and defence company MBDA.

Both magic circle firms have acted on a number of deals for the two companies in recent years. Freshfields advised on the merger of BAE's shipbuilding operations with VT Group in 2007 and subsequently secured a spot on the company's legal panel in 2010.

The review, which marked BAE's first major shake-up of its external legal advisers in the UK for more than a decade, also saw Allen & Overy, Linklaters, Slaughter and May, Addleshaw Goddard, Pinsent Masons and Blake Lapthorn appointed to the roster.

Meanwhile, CC acted for EADS in 2008 on proceedings brought against the company by the French Autorite des Marches Financiers for breaches of market information duties and insider trading rules. Two years earlier, the firm advised on EADS's €2.75bn (£2.18bn) acquisition of BAE's 20% stake in Airbus.

CC and Freshfields both declined to comment.

Related: