Including pop star Olly Murs.
Journalist Naomi Mdudu found herself locked in a Pret a Manger after she saw a “flood of people just running”.
She told HuffPost UK: “I was walking towards Oxford Street Station and Carnaby Street was just completely empty and everyone was hiding in the stores, no one knew what was going on.
“And then all of a sudden we just saw a flood of people just running. So I quickly just ran into the closest Pret and to begin with everyone was calm but we suddenly just saw more people running down from Carnaby Street.”
HuffPost reporter Owen Bennett, who was at Bond St, said he saw armed police cars driving down the road towards a cordon.
“After a few minutes where it seemed like nothing was happening there were screams and everyone started running and people then ran into buildings.”
Fifteen minutes later BTP confirmed they had responded to reports of gunfire made at 16:37.
THE MEDIA SWINGS INTO ACTION
The first media reports were filed shortly after 5pm and detailed the reports of gunfire and the “terror-related” response.
FAKE NEWS SPREADS
Perhaps the most grievous social media error was made by the Mail Online, which reported a lorry had ploughed into pedestrians.
The article quoted a tweet which said as much, however...
... as Mr Smallbone later pointed out himself.
The Mail Online was roundly condemned.
Also adding to the confusion were the usual suspects, jumping to conclusions about the perpetrators of an attack that may or may not have even happened at this point.
At 5:42pm, little under an hour after the incident began, police revealed they had not found any evidence of gunshots.
BACK IN SELFRIDGES...
A clearly shocked Murs was still trying to understand what had caused the panic.
IT’S OFFICIALLY ALL OVER
At 7:04pm the Met Police stood down their response, cordons were lifted and the affected tube stations were reopened.
And grateful Londoners were quick to praise the response of the police.
THE CAUSE
Just after 10pm, the BTP revealed the incident at Oxford Circus Tube that sparked the mass evacuation was caused by an “altercation” between two men.
It was also confirmed the only reported injuries during the event were caused by the panic itself and not any incident the police were responding to.
Nine people were taken to hospital, another seven were treated at the scene.
For the stunned Murs, the evening wasn’t quite over. Perhaps in a sign London was returning to normal, as his name quickly replaced the “Oxford Street” trend itself.
Plenty of other people also leapt to his defence.
LATEST:
Murs spent the later evening locked in a heated debate with Piers Morgan but the pair appear to have made friends.
And the Mail Online issued an apology. The Mail’s statement read:
As in any major incident these days, social media was awash with confused reports from Oxford Circus tonight, many of which turned out to be inaccurate.
It is the job of the mainstream media to strike a balance between reflecting what is being reported from the scene without spreading false facts.
And, despite the fast-moving situation, reporting this particular information that was not in line with the mass of eye-witness reports was a grave error.
The failure was swiftly spotted internally and the story containing the inaccurate information was only live for exactly seven minutes.
Nevertheless MailOnline deeply regrets that it was ever published at all, however briefly, and has instituted an urgent inquiry to establish exactly how it happened.