Cundy said that because the fire was so powerful there was "a risk that sadly we may not be able to identify everybody".
The cause of the fire is still unknown but "there is nothing to suggest the fire was started deliberately", London police said in a Friday statement. Mansur said people were not satisfied with the answers they were being given.
The local Grenfell Action Group had claimed, before and during a major 10-million-pound refurbishment of Grenfell Tower a year ago, that the block constituted a fire risk and residents had warned that access to the site for emergency vehicles was "severely restricted".More news: Trump tweets about Clinton after news of obstruction of justice investigation
The Queen and Prince William visited a rest centre in west London helping those affected by the Grenfell Tower fire, as the official death toll nearly doubled to 30.
The west London borough of Kensington and Chelsea ranks among the wealthiest areas in the United Kingdom, but also includes pockets that are among the most deprived, including the area around Grenfell Tower.
Relatives of those missing after a high-rise tower blaze in London posted pictures of their loved ones Friday in the desperate hope of news, as grief following the tragedy has turned to outrage at authorities accused of being lax in meeting building standards.
And sorrow is quickly turning to anger over whether the building met fire and safety regulations.
Met police commander Stuart Cundy told a media briefing Friday that 30 people were known to have died, including one person who died in hospital after being rescued.
The Times reported that the type of cladding used on the building was banned in U.S. buildings taller than 40 feet (12.2 metres) because of fire safety fears.More news: Shooter went to GOP baseball practice with list of names
London has a chronic housing shortage even in the best of times, and those left homeless by the fire - already angry over what they see as government inequity and incompetence - fear being forced out of the British capital.
Queen Elizabeth II and her grandson Prince William visited a community centre where some of the survivors are being housed.
"It was a very angry crowd".
Protesters demanding justice for the victims of the Grenfell Tower inferno have stormed Kensington Town Hall.
Prime Minister Theresa May had come under criticism for not meeting residents when she visited the site Thursday to talk with emergency service chiefs.More news: The 5 Best Moments from Thursday's Congressional Baseball Game
- Wife of alleged Congressional shooter speaks
- Mitrovic equalises late as Serbia earn point vs. Wales
- Tapwrit Wins the Belmont Stakes
- US accuses Chinese firm of money-laundering
- Golden opportunity for Pakistan to avenge loss to India: Imran
- Britain 'should stress jobs and prosperity in #Brexit talks': Hammond
- Fears, frustrations grow as death toll in London building fire rises
- 'Steve Scalise Took A Bullet For All Of Us'
- Robert Mueller hires 13 lawyers to handle Russian Federation investigation
- Hodgkinson took target practice in Belleville before leaving, neighbor says