Speaker's wife being sued for £50,000 over McAlpine tweet
A spokesman for the legal firm Carter Ruck has told ITV News: 'Lord McAlpine has issued and served proceedings for libel against Sally Bercow and we are representing her.
"He has put in a claim limited to £50,000."
The peer alleges that the Commons Speaker's wife posted a libellous tweet that wrongly linked him to child abuse.
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