English Defence League founder Stephen Yaxley-Lennon from Luton has been jailed for 18 months for mortgage fraud.
The 31-year-old, who has been known as Tommy Robinson, had previously admitted two counts of the offence at a hearing in November.
In an apparent comment on the sentencing at St Albans Crown Court, the controversial far-right figure took to Twitter to say "This is a complete stitch-up".
He also posted a picture of a meal of meat, mashed potatoes and chips, with the message "one last feed", and then "see u all in 18 months".
Robinson was accused of conspiring with others to obtain a mortgage by misrepresentation from the Abbey and Halifax banks.
Click below to watch a report from ITV News Anglia's Matthew Hudson
More top news
Tonight will be chilly with lows of 3 deg C ( 37 deg F ) but tomorrow will be generally fine and sunny.
A man has been left with life-changing injuries following a crash in Essex in which five people were hurt.
A seven year old girl has died after being pulled from a swimming pool near Beccles. She was taken unconscious to hospital but later died.