The TV and radio presenter took over the role in 2010 as the programme changed format to include studio guests and a panel of film experts.
Asked how she felt about taking over from Ross, Winkleman told Stylist: "Well I don't call him Jonathan; I just call him The King, so I felt absolutely terrified.
"But when they asked me to do it, to say no out of fear would have felt silly. I thought the worst thing that can happen is that I do it and get fired. "
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Of reducing her role on Strictly Come Dancing spinoff It Takes Two, she added: "I was broken-hearted. Strictly is in my blood and I feel like part of some amazing family.
"But I couldn't not pick my kids up from school, help them with their homework, give them a bath and put them to bed.
"[My replacement] Zoe Ball is brilliant, much better than me - I had to beg them to let me come back to do the results shows!"
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