Donations are not reaching survivors of the Grenfell Tower fire fast enough, campaigners say, following revelations less than 15% of the money raised has been distributed.
Data released by the Charity Commission shows £7.25 million of the £18.9 million raised in the wake of the disaster has been handed to distributing organisations on the ground.
But nearly two months on from the tragedy, only £2.8 million has so far been given to survivors, figures show.
Organisations behind the fundraising drive said much of the raised cash was being held back until discussions could take place about how to best use it as the support effort continues.
The London Emergencies Trust, tasked with handing millions of pounds to bereaved families and survivors who were in hospital, added it had only received applications from families for £1.47 million worth of donations so far.
But Yvette Williams, a campaign group Justice 4 Grenfell, told the Press Association the process of applying had proved difficult for some, particularly when English is not their first language.
"Some of these people are still heavily traumatised," she said.
"So they're supposed to leave their hotel rooms, get down to wherever, fill in this application - they already feel like they have been put in a position where they're begging for money.
"Once decisions have been made about how it's going to be distributed, the key workers attached to those families should be bringing those forms and doing it with them."
At least 80 people are thought to have died in the west London inferno, while 158 families were forced into emergency accommodation.
Ms Williams said of the distribution process: "It's definitely not been fast enough.
"Information isn't transparent. They have to beg for information and it's still not clear the background of it, or how they're going forward with it."
Donated cash has been divided up into several forms by charities, including sums specifically for the bereaved or those treated in hospital and a separate "fresh start" grant of £10,000 for all displaced families.
Red Cross and the Kensington and Chelsea Foundation both raised £5.75 million, while the Evening Standard fund collected more than £6.7 million, with smaller sums from other organisations making a total of £18,856,206.
Some £7,257,713 has been sent to distributing organisations, while £2,807,400 has been distributed, figures show.
The three fundraising drives have given a total of £4.8 million to the London Emergencies Trust to distribute on the ground, with bereaved families to receive £20,000, those who were treated in hospital for a week or more being given £10,000 and £3,500 handed to those who were in hospital for six hours or more.
A spokesman for the trust said it had paid out £664,500 to 59 out the 116 applicants and explained the complex process of verifying claims took time.
He said: "We may need to find birth certificates for the children or check that someone has died, or check with the police family liaison officer about someone who is missing presumed dead, for example.
"And if the (family liaison officer) tells us that we need to hold off because there is a tricky family dynamic that might be affected by LET showing up, we take that advice because they are the one constant in the lives of the families that have gone through the traumatic experience of the Grenfell Tower fire."
A delay in handing displaced families the separate £10,000 fresh start grant was due to many not being rehoused quickly, one charity said.
The Kensington and Chelsea Foundation decided to give out the grant this week, which will be arranged by the Rugby Portobello Trust in the neighbourhood.
A spokeswoman said: "We had initially agreed that these grants would be made when new temporary or permanent accommodation had been secured.
"However, the K&C Foundation, in consultation with Grenfell United (the survivors group), has decided that it should expedite donations to those who have not already received them, irrespective of whether they have secured new accommodation or not."
The British Red Cross and the Kensington and Chelsea Foundation both said further funds - with a combined worth of more than £5 million - would be distributed as soon as it became clear how it would be spent.
"Every penny of the £5.75 million raised by the British Red Cross for the London Fire Relief Fund will go to the surviving victims of the Grenfell fire and their families," a spokeswoman for the British Red Cross said.
The Charity Commission said it had taken the decision to help with the effort due to the "urgent need" of the victims.
Chief operating officer David Holdsworth said: "We have been working to help charities coordinate their response so that those affected know where to go to get access to the funds that have been raised for them.
"As the regulator, we also ensure that funds are protected for those they are intended for."
Labour leader Jeremy Corbyn responded to the disclosure by warning caution was needed to ensure donations reached the right people.
He said: "The Charity Commission have obviously got to examine very carefully what's going on and make sure that the generosity, the unbelievable levels of generosity, of many people actually gets through to those who need it.
"Clearly there is a responsibility on those who run organisations to make sure that it gets through to the people it's intended for.
"We have to just be cautious on this, otherwise those that want to give generously will be deterred."