White & Case has acted for Nigeria's Guaranty Trust Bank on its $350m (£178m) Eurobond issue. This is the first international corporate bond issue by a Nigerian business since the early 1990s. Finance partner Stuart Matty led the team. Standard Bank acted as sole bookrunner and was also joint lead manager along with Afrinvest (West Africa), were both advised on UK issues by Allen & Overy capital markets partner Jonathan Mellor.