A man travelling on the Croydon tram which derailed described the crash as "like something out of [the horror film] Final Destination".
Tom Dale, a friend of Dane Chinnery who has been named as one of the seven victims, said he saw the 19-year-old on the tram on Wednesday morning, but after coming round after blacking out in the crash he could not see Mr Chinnery anywhere.
Mr Dale, 20, continued that all he could see was a boot where Mr Chinnery had been sitting, adding he later learnt Mr Chinnery was trapped underneath the tram.
Mr Dale - who suffered bad bruising and other minor injuries in the crash - paid tribute to his friend as a "genuine lad", adding "he didn't deserve it, he was still quite young".
Six men and one woman died when a tram derailed in Croydon
A teenager described as a "friendly, genuine lad" has been named among the seven people killed when a tram derailed in Croydon.
The driver of a tram that derailed killing seven has been questioned amid suggestions it failed to break before taking a corner at speed.