Grenfell demonstrated people cut corners, had poor competence, made poor behaviours with too much focus on reducing cost at the expense of doing a proper job.
The building safety regulator being established in the wake of the Grenfell tragedy is going to ensure the lessons of Grenfell are all implemented throughout the built environment. 
Key part of this will be new regime for higher rise residential buildings (those over 7 stories or 18 m) or higher rise care homes / hospitals. Clients/developers can no longer choose who the building control body will be, they must use the BSR for these in scope buildings.

5 Key learning points:
1. Design must be approved before moving into build phase
2. More justification of building regs compliance may be required 
3. BSR will not carry out pre-app work. Building control will not be a service provider
4. Introduction of management arrangements for building regs etc
5. Competence requirements are key 

Andrew Moore, Head of Operations, Building Control, Health & Safety Executive