More than 80 blast casualties remain in London hospitals after doctors worked through the night treating victims.
More than 700 people were injured in the London blasts
Many patients underwent surgery after losing limbs and suffering multiple injuries. Four victims are also being cared for at a specialist burns unit.
Hospitals called in extra staff and cancelled non-urgent surgery to deal with the injured under emergency plans.
Over 700 people were hurt and at least 50 died. People worried about relatives or friends should call 0870 1566 344.
Some 23 people have been admitted to University College Hospital, five of which are intensive care.
Professor Jim Ryan, a senior A&E consultant at University College Hospital, which is still treating 23 people, said: "Most of the operations are on limbs. You have penetrating wounds, indented stone, debris, glass or metal.
"There is also head injury management, and lung inhalation and injuries to the chest."
He added many of the patients would be facing further surgery and complex care.
And doctors at Whitechapel's Royal London Hospital, which saw the most casualties with more than 200 people being brought in, are still treating 19 people, seven of which are in the intensive care.
A&E clinical director Alastair Wilson said: "There is still a lot of surgery to be done, probably over this weekend.
"When you see so many people who have been injured unnecessarily that is not good. That has upset people."
The Royal Free Hospital in north London said 13 were still in hospital, five of whom had undergone surgery. All were in a stable condition, a spokeswoman said.
And St Mary's Hospital in Paddington is treating 10 people, two of which are in a critical condition.
Three of St Mary's patients have been transferred to Chelsea and Westminster Hospital's specialist burns unit, bringing the number there to four.
A spokeswoman for Chelsea and Westminster said they were being assessed by a team of plastic surgeons.
Eleven people are still at Guy's and St Thomas's, near Waterloo, one in a critical condition. The others are all in a stable condition, and four of them are expected to undergo surgery later.
A spokeswoman said: "Patients are being treated for smoke inhalation, burns and serious limb and chest injuries."
And Great Ormond Street Hospital for Children, which set up makeshift facilities under its major incident plan as it does not have an A&E department, still has four blast casualties.
Home Secretary Charles Clarke said: "There are a number of people terribly injured in hospital still and we don't know how they're going to survive or not."
Casualties have received visits from Health Secretary Patricia Hewitt and Prince Charles.
Speaking at the Royal Free Hospital, Ms Hewitt praised the NHS response, saying hospitals were "almost immediately ready and could have coped with far more people had they needed to".
WHERE THE CASUALTIES WERE TAKEN
University College Hospital - 58 seen; 23 remain; 5 in intensive care2
Great Ormond Street - 22 brought in; four kept in, two serious3
Royal London - 208 seen; 19 remain; seven in intensive care4
Guy's and 5
St Thomas' - 22 brought in; 11 still there6
St Mary's - 38 seen; 10 remain; two critical7
Royal Free - 61 brought in; 13 remain, five of whom had surgery