LONDON — George Psaradakis survived to tell of his horrific last journey driving the No. 30 bus before a bomb tore the roof off — but others weren't as lucky. Jamie Gordon's co-workers have found his cellphone but not him.

Gordon called his asset-management firm in central London on Thursday to say he was on his way to work aboard a bus.

He has not been heard from since, although his cellphone was found in the debris of the double-decker bus that was ripped apart by a bomb in Tavistock.

Psaradakis, driver of the bus, escaped and assisted wounded and dying passengers.

"I tried to help the poor people," Psaradakis, 49, said on his company's Web site in his first public comments since the attack that killed 13 passengers. "There were many injured people, and at first I thought, 'How am I alive when everyone is dying around me?'

"The police then had to take me away because they were concerned there might be further explosions."

The No. 30 bus was near Russell Square in central London after being diverted from its usual route because of people streaming out of underground railway stations hit by earlier bomb blasts.

"Suddenly there was a bang, then carnage," Psaradakis said. "Everything seemed to happen behind me."

He said he would not change jobs despite the danger.

"Myself and the other drivers in London have an important job, and we are going to continue to do that job as best we can," he said. "We are going to continue our normal lives. We are not going to be intimidated."

The Stagecoach bus company said Psaradakis suffered minor cuts and bruises and appeared to be in shock immediately after the explosion.

He said he was relieved to be alive.

"Many other people have not been so fortunate," he said. "I feel for the people who have perished and for their families."

Yesterday, Gordon's co-workers posted color photos of the 30-year-old Zimbabwean on trees and walls on the streets around the blast area.

"Please help us find our friend who is missing following yesterday's bombings," the posters read in a scene reminiscent of the desperate search for victims after the Sept. 11 attacks in the United States.

"The worst-case scenario is that he is dead," said Gordon's partner, Yvonne Nash, who used her position with a cellphone network to trace the last call made on Gordon's phone to the scene of the blast.

"We just have to find him. If he is hurt and on his own in a hospital, we need to be with him," she said.

Others set out yesterday bearing photographs of loved ones to scour London hospitals treating scores of injured.

A mound of floral tributes, many bearing cards with touching sentiments, grew outside the entrance to King's Cross station, near the site of the worst of the subway bombings. Other bouquets were clipped to metal fencing around the Tube station.

David Webb, 38, was searching for his sister Laura, 29, who hadn't been seen since she left home Thursday.

"We are very upset about her disappearance, and all the options go through your mind. ... She may be being cared for somewhere, or maybe she is still underground," Webb said.

Friends of Monika Suchocka were looking for the 23-year-old Polish woman, who has been out of contact since calling her accounting office to say her train had been delayed and that she planned to take a bus.

"We just don't know what happened after that," said Magdalena Dondelewska, 24, who was looking at University College Hospital.

Nazmul Hasan was desperate for news of his niece, Shahera Akther Islam, 20, who was on one of the targeted subway lines on her way to her job at a bank and never showed up or returned home.

"Calls to her cellphone were answered only by voice mail," Hasan said. "I am trying to stay as calm as I possibly can, but you only have to see her mother and father to see the pain this has caused."

Eaman Spelman, meanwhile, counted his blessings.

"We were two minutes out of King's Cross [station], and there was a huge explosion with big red flashing lights and the train seemed to sort of dip and come to a halt," he said of his commute to work at the upscale Harrods department store.

Emergency workers who helped 350 injured to hospitals Thursday reported that many spoke with accents or in languages other than English. Metropolitan Police Commissioner Ian Blair said people injured in the attacks included some from Sierra Leone, Australia, Portugal, Poland, China, the United States and Denmark.

British newspapers hailed one of those rescuers as a hero, but former firefighter Paul Dadge insists he was acting on instinct when he gave first aid to about half a dozen victims of the bombing between the King's Cross and Russell Square stations.

Photos of Dadge, 28, who works for a telecommunications company, appeared yesterday in many of London's dailies, showing him helping a burn victim.

Dadge said he was riding the Underground when his train stopped suddenly. He and other passengers exited the station, and Dadge saw bloodied victims as he surfaced.

"I was trained in first aid when I was in the fire service, but to be honest, I think it was instinct more than training that took over," he said. "I always seem to be in the wrong place at the right time."