Two of them were taken as a priority, London Ambulance Service said.
Nick Krofa, who lives nearby and saw the aftermath, said: “I went to the window and saw that the tram had derailed from its track.
Sure, there are some fun aspects, but nothing can prepare you for the disappearance of your anonymity.
"There was a small car there, I was trying to make sense of what had happened.
"What actually happened was unbelievable - I don't know how a small car could derail a tram." Police were called and are looking into the incident.
And a bloody busy one at that: more than five million members (62pc of them men aged 25-49) who congregate here to talk about everything from garden sheds to watches.
Keeping an eye on this rather vast tranche of the UK’s male populace is motoring journalist Dan Trent, Piston Heads.com’s 38-year-old editor, who explains that the URL was first registered back in 1998 as a fansite for TVR owners.