Emergency services were called to the 24-storey residential tower block shortly before 01:00 BST on Wednesday.
"That's one of the most bad things I have ever seen", Prince William said of the fire which left the tower block a blackened shell.
May was rushed away from a meeting with residents on Friday under heavy police guard as protesters shouted "Shame on you" and hundreds stormed a local town hall calling for justice.
May met victims privately at a central London hospital on Friday and had expressed her sorrow on television on Thursday after meeting emergency services personnel. "It's because that tower was such an eyesore for these people in very expensive houses just opposite", she said.
Around 400 people were reported missing, but Mr Cundy downplayed the figure, saying it added up to more people than actually lived in the block. "It's not just her lack of empathy. the Government hasn't grasped numerous things that now matter, from how people will get legal support in the inquiry to where people will be relocated - the fear is they could end up in towns or villages 100 miles away".
His defence of the Prime Minister comes as she has been labelled "cold" and "inhuman" for the way she's responded to the plight of those affected.
Omar, 25, survived, but the brothers were separated as firemen tried to rescue them from the burning building early Wednesday.
Wrack said the "stay put" policy is sensible - unless the integrity of the fire doors, ceilings and fire-resistant walls fail.
"Everyone affected by this tragedy needs reassurance that the Government is there for them at this awful time - and that is what I am determined to provide", she said.
Many are demanding answers for how the blaze spread so quickly.
Police said on Thursday that they had launched a criminal investigation into the fire.
He wrote: "I am watching footage of the Grenfell Tower fire in London".
BBC Newsnight reports that the type of cladding on the outside of Grenfell Tower, installed in 2015 during a refurbishment, had a polyethylene - or plastic - core, instead of a more fireproof alternative with a mineral core.
The group outside Number 10 on Saturday. Standard versions use plastic such as polyethylene for the core, while more expensive variants use fire-resistant material.
Barwell had told lawmakers that the government meant to review fire safety standards following a deadly blaze at the Lakanal House high-rise building in south London in 2009, in which three women and three children died. It did not address the exact makeup of the panels. "At this time, we are not aware of any link between the fire and the exterior cladding to the tower".
Almost 110 families made homeless from the blaze are being housed at hotels in west London.
It followed calls for those involved in the building's recent renovation - which many claim posed a major safety risk - to face prosecution.
Queen Elizabeth and her grandson Prince William visited a community centre Friday where some of the survivors are being housed, and where volunteers have been inundated with donations of clothes and food.
It may take some time though, before the families of the victims know the fate of their loved ones.
Speaking to the Guardian about the fire disaster, Miss Dent Coad, 62, who lives near the block, said yesterday: "I can't help thinking that poor quality materials and construction standards may have played a part in this disgusting and unforgivable event".
"When you have a fire that takes hold like that, that is literally an inferno".
The protests are a reflection of the anger in the community following the devastating fire that killed 30 people.