'I saw a bright light behind me'

More than 700 people were injured in four explosions across London.

One man speaks about the horror of being in a tube carriage when a bomb went off.

Paul Mitchell's story

It was Paul Mitchell's regular journey.

He got on the Piccadilly Line at King's Cross, climbing aboard on the front carriage.

"It is normally very busy and this was no different. Lots piled on," said the 27-year-old.

"I remember shaking my head and sighing because there was a person next to me pushing me.

"Then everything just changed. I saw a bright light from behind me. There was a roaring noise, I fell to the floor.

"I closed my eyes."

What Mr Mitchell did not know was a bomb had gone off - the second in the morning of attacks - at the front of the carriage he was in, killing at least 21 people.

There was a lot of people who were not moving, I feel very lucky Paul Mitchell

Mr Mitchell said: "Everyone was screaming. I was screaming. I thought I was going to die. That moment was terrible.

"It was utter pandemonium."

Mr Mitchell, who works for an internet company, then spent 20 minutes waiting for the paramedics to arrive.

The explosion had ripped open his leg. "I was completely conscious. I could feel the inside of my leg. Someone opposite me put a tourniquet on my leg. It was such a big wound.

"We were thinking: When are the paramedics coming, when are they coming?

"There was a lot of people who were not moving, I feel very lucky."

However, Mr Mitchell, who is now being treated at the Royal Free Hospital in north London, said he did not have words to describe what he thought about the people or person responsible for the explosion.

"I am just concentrating on getting better, but I don't understand it.

"But I will be angry, I will be angry."