The TV presenter is said to have been told by producers to not rehearse until Wednesday (September 19) due to her previous appearance on the show's 2010 Christmas special.
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Producers reportedly placed her on the ban in order to avoid other contestants feeling that she has an unfair lead.
Britton came third in the festive special with partner Matthew Cutler.
She has been teamed up with professional dancer Artem Chigvintsev for the current series.
Chigvintsev spoke of his frustration over having to wait to rehearse with his celebrity partner, tweeting: "Have to wait till Wednesday to start training! Anticipation is killing me. Roll on."
The dancer was recently quoted as stating his disappointment over landing Britton as his partner.
Strictly Come Dancing returns on October 5 on BBC One.
Photo gallery - Strictly Come Dancing launch show:
Copyright: BBC
