Freshfields Bruckhaus Deringer, Allen & Overy (A&O) and Clifford Chance (CC) have all taken advisory roles on a $1bn (£623,700) 'Yankee' bond offering by airports operator BAA.

Freshfields advised BAA with a team led by international capital markets co-head Sarah Murphy and finance partner Marcus Mackenzie, while A&O advised the arrangers and dealers – which included RBS and Citibank – led by capital markets partners Tim Conduit and Diana Billik. CC acted for the bond trustee.

A 'Yankee' bond is a US dollar denominated bond issued in the US by a foreign company, and is often favoured by borrowers due to size of the US bond market. BAA will use the proceeds of the issuance to refinance debts relating to its two regulated airports, Heathrow and Stansted.

Mackenzie said: "BAA is a regular user of capital markets to finance its business, including funding its capital investment programme. The group has done bond issues already this year in the European market and it has now decided to look further afield to diversify its investor base by going into the US market for the first time."

Freshfields and CC also recently took roles on another major capital markets deal, advising technology company Amadeus Group on a €3bn (£2.7bn) medium term note programme.

The Freshfields team was led by capital markets partners Mark Trapnell in London and Ana Lopez in Madrid.

CC advised the dealers, which comprised Deutsche Bank, JP Morgan, Morgan Stanley and RBS, fielding a team led by partner Stuart Percival.