[1/2] Trade visitors walk past an advertisement for BAE Systems at Farnborough International Airshow in Farnborough, Britain, July 17, 2018. REUTERS/Toby Melville NEW DELHI, May 29 (Reuters) – India has filed a graft case against Britain's BAE Systems plc (BAES.L) and Rolls-Royce Holdings (RR.L) for "criminal conspiracy" in the procurement and licensed manufacturing of 123 advanced jet trainers, a federal police document showed. The case is based on the findings of an investigation launched by India's Central Bureau of Investigation (CBI) in 2016, the document dated May 23 said. Rolls-Royce said the allegations being investigated were disclosed back in 2017,…