{
   "primaryTopic" : {"CompanyName":"NATIONAL GRID ELECTRICITY TRANSMISSION PLC","CompanyNumber":"02366977","RegAddress":{"AddressLine1":"1 - 3 STRAND","AddressLine2":"LONDON","Postcode":"WC2N 5EH"},"CompanyCategory":"Public Limited Company","CompanyStatus":"Active","CountryOfOrigin":"United Kingdom","IncorporationDate":"01\/04\/1989","PreviousNames":[{"CONDate":"26\/07\/2005","CompanyName":"NATIONAL GRID COMPANY PLC"},{"CONDate":"21\/10\/2002","CompanyName":"THE NATIONAL GRID COMPANY PLC"}],"Accounts":{"AccountRefDay":"31","AccountRefMonth":"03","NextDueDate":"30\/09\/2026","LastMadeUpDate":"31\/03\/2025","AccountCategory":"GROUP"},"Returns":{"NextDueDate":"15\/08\/2026","LastMadeUpDate":"01\/08\/2025"},"Mortgages":{"NumMortCharges":"3","NumMortOutstanding":"3","NumMortPartSatisfied":"0","NumMortSatisfied":"0"},"SICCodes":{"SicText":["35120 - Transmission of electricity"]}}
}