National Grid plchttps://pcaobus.org/form-ap-filings/8518/8518National Grid plc85186/9/2017 4:47:58 AM2017edbd9096-1b01-4641-9837-1382317d2fe0876PricewaterhouseCoopers LLP68294National Grid plc1004315NGG0087600009Michael Robert Timar0087600009True