Former heavyweight champion Tyson Fury has called for a resolution to his doping suspension, as he bids to end a near two-year absence from the ring.
Fury, 29, has not fought since beating Wladimir Klitschko in November 2015 and cannot return until a UK Anti-Doping hearing into his ban takes place.
Ukad postponed the hearing in May, scuppering Fury's hopes of a July bout, and is yet to announce another date.
"How long must I be held up and kept out of action?" Fury wrote on Twitter.
"Clear my name and let me return to my former glory. I'm innocent, set me free!"
- Frank Warren expects Ukad delay as BBBofC reiterates licence stance
- Suspension could be 'blessing in disguise' - Peter Fury
Ukad, which charged Fury with a doping offence in June 2016, refused to comment on his ongoing case, adding there is no timescale for its investigation.
The British Boxing Board of Control said at the time of the postponed hearing in May that Fury's licence was suspended "pending further investigation by Ukad into anti-doping and medical issues".
He will have to appear before the board to request permission to be allowed to fight again - but it cannot rule on his case until Ukad completes his hearing.
Promoter Frank Warren retweeted Fury's plea, but said when the Ukad hearing was postponed that he feared it may not be held until October.
Fury's full tweet read: "How long must I be held up and kept out of action? It's been 15 months since I've been under investigation, you're keeping an innocent man from fulfilling his destiny and from providing for his family.
"Everybody else is dealt with in a few months, why must I be treated any differently?
"Surely there must be a human rights law preventing this from happening to people!
"Either ban me or set me free as I've been in limbo for a long time! I want to move on with my life!
"Clear my name and let me return to my former glory."
During his absence from the sport, Fury has twice claimed he has retired before then deciding to carry on boxing.
His cousin Hughie is due to challenge undefeated New Zealander Joseph Parker for the WBO heavyweight title on 23 September at the Manchester Arena.
- 29 November 2015: Beats Ukrainian Wladimir Klitschko to become the WBA, IBF and WBO champion
- 8 December 2015: Stripped of his IBF title for failing to fight the mandatory challenger
- 24 June 2016: Postpones July's rematch with Klitschko after injuring an ankle in training
- 4 August 2016: UK's anti-doping body confirms it charged Fury with a doping offence on 24 June
- 23 September 2016: Postpones rematch for a second time because he is "medically unfit"
- 3 October: Appears to retire from boxing, tweeting: "I'm the greatest, and I'm also retired." Three hours later he reverses the decision, tweeting he is "here to stay"
- 5 October 2016: Says he has been taking cocaine to help him deal with depression
- 10 October 2016: Given extended deadline to convince the WBO not to strip him of his world heavyweight title
- 12 October: BBBofC starts looking at Fury's boxing licence
- 12 October: Vacates WBA and WBO titles
- 13 October: Licence to box suspended by BBBofC
- 6 March 2017: Suggests he could make a comeback on 13 May - fight does not go ahead
- 12 May: Ukad doping hearing is postponed, quashing hopes of July return
- 17 May: Frank Warren says he fears Ukad hearing will not take place until October
- 26 July: Posts on social media to say career is over, tweets "from retirement" next day
- 16 September: Says he is on "right path" to return to ring