Tommy Robinson has been jailed for 13 months for breaking contempt of court laws.
The right wing activist and founder of the EDL was arrested on Friday morning for streaming a Facebook live video outside Leeds Crown Court.
His sentence can be revealed for the first time after reporting restrictions were lifted.
Robinson, real name Stephen Yaxley-Lennon, admitted contempt of court following his arrest.
The charges relate to him publishing information that could prejudice an ongoing trial which is subject to blanket reporting restrictions.
Reporting restrictions were initially placed on details of Robinson's sentence but were lifted following a legal challenge on Tuesday.
The 35-year-old received 10 months for contempt of court and a further three months for breaching the terms of a previous suspended sentence.
He was already subject to a suspended sentence for contempt for filming in court during a rape trial in Canterbury last year.
Robinson's latest arrest sparked a mass protest in Whitehall over the weekend as supporters chanting "shame on you" demanded his release.
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