I'll take your word for it, I'm not familiar with the UK versions of these laws
Still, this isn't a copyright case, it's a trademark case. I dont' see where the woman being discussed actually did anything illegal, the knitting patterns are not copyrighted. I guess the BBC doesn't either since they say that they haven't threatened legal action against her. From what I can see, the only people who are breaking the law are the Ebay sellers. They're being accused of violating trademark law since they're selling Doctor Who items without a license. You'd think the BBC would go after them instead, and leave the woman alone.
BTW, they must have edited the article on their website. One of the sentences you quoted in your original post actually says "The patterns of Ood and Adipose were removed from her website after the BBC's commercial arm complained that they breached its
trademarks." The word copyright doesn't appear anywhere in the article.