A judiciary paper said Stella English's had been dismissed:
The judges also ruled that the claim "should never have been brought."
Former winner of The Apprentice Stella English has lost her claim of constructive dismissal against businessman Lord Sugar, the Judicial Office said.
Lord Sugar said nothing as he left an employment tribunal in which the 2010 winner of his TV series The Apprentice is trying to sue him for constructive dismissal.
Lord Sugar has accused one of his Apprentice winners of lying and taking him to a tribunal "to extract money". Stella English won the TV show in 2010, but is suing the businessman for constructive dismissal.
ITV News UK Reporter Sejal Karia is at the East London Employment Tribunal.
Winner of TV show The Apprentice Stella English was an "untrusting and suspicious person" who was full of "conspiracy theories", Lord Sugar told an employment tribunal today.
Ms English, 34, who won Series 6 of the BBC show in 2010, is suing the millionaire business mogul, claiming constructive dismissal.
Reading out his own statement at the East London Employment Tribunal Service hearing today, Lord Sugar said he was surprised when she told him she was not enjoying the £100,000 role with him that she had won.
"I began to think that perhaps the reality of work rather than the glamour of showbusiness was beginning to bite with her," he said.
"Her time in the limelight was beginning to fade."
Lord Sugar went on: "In hindsight, I can now see that she was a very untrusting and suspicious person.
"It was clear to me now that she thought that everyone was out to trick her.
"She thought during the whole process that she was being lied to and that the other candidate has been chosen as the winner."
Lord Sugar said Ms English confronted him with the idea that semi-finalist Chris Bates had won the competition because she had not filmed a segment of the show showing her leaving his office in a chauffeur-driven car.
Lord Sugar added: "She always came across as quite reserved and detached and, some might argue, cold.
"At other times she would come to me with some very odd conspiracy theories."
He said she believed the PR agency he himself used had leaked information about her family to the press.
The winner of TV show The Apprentice said today she had thought of leaving the show starring Lord Sugar but felt she had invested too much time in it to drop out. Stella English, 34, also gave up a high flying career in the City when she was named as a semi-finalist on the show.
Ms English, from Whitstable in Kent, is suing Lord Sugar for constructive dismissal, had to carry out a four-month probationary period before she was eventually named the winner in December 2010.
Stella English, 34, from Whitstable in Kent, who won Series 6 of the BBC1 show in 2010, is suing the millionaire business mogul, claiming constructive dismissal. Ms English said she could not believe Lord Sugar was not taking her life and future seriously.
During cross-examination at the East London Employment Tribunal Service, Ms English said Lord Sugar told her during an unscheduled meeting on September 28 2011 that he would not be keeping her on.
The tribunal previously heard that Ms English worked for Lord Sugar's Viglen division for a four-month probationary period between September and December 2010 before being crowned the winner of the competition that month.