Speaking to the Islington Gazzette, Umit Bakir, who works for a minicab company said:
I looked outside and I could see the fire coming up from underground. Then the fire brigade came and closed the road. My business was far enough away, but if I had been at Iceland I would have been a bit worried.
More top news
The prime minister was shouted at as she left the scene of the tragedy in which at least 79 people died.
Do you know a fundraiser with an inspirational story to tell? Find out how to nominate your ITV London Fundraiser of the Year 2017
The inaugural service left London Liverpool Street for Shenfield, Essex, on the existing TfL Rail route on Thursday morning.