On what date did the tragedy that resulted in an estimated 80 deaths, and lead to Nicholas Paget-Brown stepping down as leaderof the Kensington and Chelsea London Borough Council occur?
Nicholas Paget-Brown: Nicholas Paget-Brown (born 1957) is an English Conservative politician who was leader of the Kensington and Chelsea London Borough Council. Nicholas Paget-Brown:  On 30 June 2017, he announced that he would step down as leader due to the council's response to the Grenfell Tower fire, and was replaced as leader by Conservative Elizabeth Campbell on 19 July 2017. Grenfell Tower fire: The Grenfell Tower fire occurred on 14 June 2017 at the 24-storey Grenfell Tower block of public housing flats in North Kensington, Royal Borough of Kensington and Chelsea, West London.
14 June 2017