People with their clothes burned off, amputated limbs - those were the horrific images witnessed by Ian Wade who was caught up in the blasts as he travelled to work at BBC London in Marylebone.
Mr Wade was on an Underground carriage on the Piccadilly Line with his wife Evie when a bomb exploded in the carriage next to his around 0840 BST on Thursday.
He said: "We had just got through King's Cross and I heard an almighty 'boom, boom' and the carriage stopped immediately. The electricity went completely and the carriage filled with soot.
"We could just make out what was in front but nothing else. The explosion was on the ceiling of the carriage in front and all the glass from the carriage had caved in. People were trying to kick the windows in.
Mr Wade added: "I could see there were people with their clothes burned off ... people with limbs missing.
"There must have been at least one death in there. I have never known anything like it."
He added: "My wife Evie really thought that we were going to die. It was just 'boom' and that was it. I couldn't think straight."
Mr Wade and his wife were inside the carriage for 15 minutes before they were able to get out.
"When the emergency services arrived, we all had to walk through the carriage in front to get out.
"Luckily there was a lot of straight thinking people on the Tube - there was only a few people who were losing it, screaming, but they were in the carriage where the blast happened, " said Mr Wade.
He praised the ambulance, police and London Underground for the way in which they dealt with the situation.
He said: "They kept checking we were okay then they led us to the Methodist Church nearby and gave us a cup of tea."
Mr Wade summed up his thoughts: "I don't know what to think. I've lived in London all my life and I've never experienced anything like this."