HOUSTON, July 15 (Reuters) - No oil is leaking from BP Plc's BP.LBP.N blown-out Macondo well into the Gulf of Mexico for the first time since late April, a company executive said on Thursday.

Kent Wells, BP’s senior vice president of exploration and production, told reporters a new cap had completely shut in the flow while the company conducts a critical pressure test on the stricken well. (Reporting by Kristen Hays)