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
Warm sunny spells will affect many parts of the Anglia region but there's a risk of the odd shower later. Highs of 19ºC.
Warehouses have been buckled by heat of fire as crews continue to battle a huge blaze at an industrial estate in Bedfordshire.
A book-keeper had denied raping and murdering 20-year-old India Chipchase, who went missing after a night out.