The tycoon has initiated proceedings to try to recoup some of the legal fees he paid out when she brought a constructive dismissal case against him.
The mother of two claimed that she was forced to resign from the £100,000 a year job that was her prize for winning series six of the BBC1 show in 2010 because "it was not a role of substance".
But her case was dismissed by the tribunal panel which ruled the claim "should never have been brought".
Lawyers representing Lord Sugar today reiterated the statement as they sought to reclaim legal costs.
But Ms English told the hearing that she only has around £200 in her bank account.
She said that despite owning three properties she has been forced to apply for housing benefit and is also considering applying for jobseekers allowance.
Ms English, who has been unemployed since July, said that she brought the case in "good faith" thinking it was legally sound.
In her witness statement she added: "This entire episode has not only affected my family financially and emotionally, it has also had a devastating impact on my further career prospects.
"I am now an everyday parent trying to support two young children and feel unfairly penalised for standing up for myself against such a powerful opponent."
Ms English told the hearing that until July she was working for Citigroup as a contractor earning £500 a day.
But after her contract came to a close she has not found more work.
The 34-year-old said she was slowly falling into arrears on the three properties she owns.
She told the panel: "I do not know how I am going to feed my kids, never mind the mortgages."
Ms English said the stress of the situation had contributed to the break down of her marriage.
"The immense pressure as a result of this tribunal, and in particular statements made by the respondent affecting my credibility, has had a detrimental effect on my career prospects," she said in her witness statement.
"Additionally the stress on my husband and young children has been a major contributor to the break down of my marriage.
"This has left me not only unemployed but a single parent."
The initial hearing was told that Ms English was given a role with Lord Sugar's IT division Viglen after winning the popular show but she resigned in May 2011, claiming her role there was that of an "overpaid lackey".
Ms English, from Whitstable, Kent, said she then felt pressured into taking up a new position at Lord Sugar's internet set-top box company YouView.
Lord Sugar told the tribunal that he was simply trying to help her out because she complained that she was "desperate for money".
Ms English claimed that during an unscheduled meeting with the tycoon, he told her that he would not be renewing her contract so she resigned.
Following the conclusion of the case, Lord Sugar told the hearing that he would take on claim culture as a "personal crusade".