London Fire Brigade has been slow to implement changes following the Grenfell Tower disaster in 2017, the industry watchdog has said.
A review found that important projects including reviews of staffing arrangements and emergency response using specialist equipment and personnel have either stalled or are behind schedule, according to the examination by Her Majesty's Inspectorate of Constabulary and Fire and Rescue Services.
Its report also said the London Fire Brigade goes to a disproportionately high number of false alarms, while some drivers have not received refresher training for 20 years.
Fire Brigades Union general secretary Matt Wrack said the report will be "deeply concerning for the Grenfell community and all of London".
The assessment identified areas of strength within London Fire Brigade, such as being well-resourced with staff and exceeding its own standards on response times.
But the report was particularly scathing of its current effectiveness for protecting the public through fire regulation, how it uses its resources, and said it is "worryingly inadequate" at "getting the right people with the right skills". The watchdog also said senior LFB commanders rarely exercised "operational discretion" to deviate from brigade policy.
The report did not make explicit reference to the brigade's much-condemned stay put policy, when Grenfell residents were told to remain in their flats by firefighters and 999 operators for nearly two hours after the blaze broke out.
Inquiry chairman Sir Martin Moore-Bick subsequently identified that more lives could have been saved had the policy been abandoned sooner.
Dany Cotton, who will retire as London Fire Commissioner at the end of the month, had seen the report before she announced the decision to bring her resignation forward from April 2020, Mr Parr said.
Her replacement, Andy Roe, said: