Grenfell - the extremes of London

I took a walk around Holland Park and North Kensington and the extremes are extraordinary. Fabulous blossomed lined streets with huge houses at a cost of millions - the estate agents were advertising flats at £7,000 per week!! Makes Walthamstow look really third world! Then you get to the council estates which are cramped with very little space and towering above them all is the Grenfell Tower. What is our council and the GLA doing to avoid this type of community disaster??