IN Brief:
- Police expect to submit Grenfell Tower investigation files to the Crown Prosecution Service by September.
- Fifty-seven individuals and 20 organisations remain suspects for potential criminal offences.
- Charging decisions are expected before the tenth anniversary of the fire in June 2027.
The Metropolitan Police expects to submit investigation files linked to the Grenfell Tower fire to the Crown Prosecution Service by September, moving the criminal process closer to formal charging decisions.
Police have said 57 individuals and 20 organisations remain suspects for potential offences. The suspected offences include corporate manslaughter, gross negligence manslaughter, fraud, misconduct in public office, and health and safety breaches.
Charging decisions are expected before the tenth anniversary of the fire in June 2027. Prosecutors will need to assess whether the evidential test and the public interest test are met before any charges are brought.
The fire at Grenfell Tower in June 2017 killed 72 people and led to the most significant building safety reckoning in modern UK construction. The public inquiry’s final report, published in 2024, identified failures across government, regulation, local authority oversight, construction management, product testing, certification, and refurbishment delivery.
The criminal investigation is separate from the inquiry, but both processes have shaped the construction sector’s post-Grenfell operating environment. Building safety is now embedded much earlier in design, procurement, product selection, installation, inspection, and handover than it was before the fire.
The Building Safety Act, higher-risk building gateway regime, new dutyholder requirements, and stronger expectations around competence have all altered how project teams manage risk. Clients, principal designers, principal contractors, consultants, manufacturers, installers, and building control bodies now face greater pressure to document decisions clearly and retain usable evidence throughout the project lifecycle.
That shift has changed routine site and office practice. Product substitutions are more heavily scrutinised. Fire strategies are challenged earlier. Facade, insulation, cavity barrier, and active fire-safety packages are subject to more detailed technical review. Contractors are also placing greater emphasis on records that show what was specified, approved, installed, inspected, and handed over.
The legal process has been criticised by bereaved families and survivors for its length. The scale and complexity of the investigation are substantial, but the prolonged wait has also reinforced the slow pace at which accountability can move after a major building failure.
Construction businesses cannot wait for prosecutions before applying the lessons already established through the inquiry and the regulatory response. Weak documentation, blurred responsibility, poor oversight, and inadequate challenge across design and installation can create risk that remains live long after practical completion.
The move towards CPS review also places corporate accountability back in focus. Construction projects are delivered through layered contractual relationships, but criminal law tests may examine who knew what, what decisions were made, how risks were understood, and whether duties were discharged properly.
The next formal milestone will be the submission of files to prosecutors. Any eventual charges would land in a sector already adapting to tougher safety regulation, more demanding clients, and a public expectation that responsibility for building performance can be traced through the full project chain.
