The story of the man, known only as Olu, went viral over the weekend after a video was posted on social media showing him being arrested outside Southgate station and having his Bible taken away.
It's unclear what he said while preaching which caused the police to intervene.
In a statement following his arrest, the Metropolitan Police told Premier: "Police were called to Southgate Underground Station at 1.52pm on Saturday, 23rd February in response to concerns raised about a man's behaviour.
"An arrest was made to prevent a breach of the peace. The man was then de-arrested and no further action was necessary."
The preacher has been receiving assistance from the campaign group Christian Concern.
A Christian preacher this afternoon was arrested at Southgate station London N14 for preaching about Jesus . @CConcern the police told him it's because public had said he was being islamophobic . We have the full video and wondered when preaching was now illegal ? @Campaign4Tpic.twitter.com/ZxC1DhlZCf— EyeOnAntisemitism (@AntisemitismEye) February 23, 2019
In a statement on Twitter, Christian Concern said: "Our legal team have now spoken to street preacher Olu who was arrested at Southgate tube station on Saturday.
"After being unnecessarily arrested, he was dropped off in an unfamiliar suburb without enough money to get home.
"Thankfully a kind member of the public gave him some money, but what did the preacher do next? He went straight back to Southgate tube station and continued to preach the gospel of Jesus Christ that same evening."
Premier understands that police policy when dealing with a breach of the peace is to take the culprit out of the area to calm a situation.
The Met Police told Premier: "The man who was arrested was walked approx. 200m away; de-arrested and shown to a nearby bus stop".
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