Sally Bercow, wife of Commons Speaker John Bercow, has continued to tweet about reports she is receive a letter from Lord McAlpine's legal team.
She maintains her post was "not a libellous tweet":
Thanks for phone calls/texts/tweets. I guess I'd better get some legal advice then. Still maintain was not a libellous tweet - just foolish
More top news
Parts of the UK will feel colder than the Arctic Circle in the coming week as bitter winds make it feel -15C in some places.
At least three people have been killed in clashes in eastern Ghouta just hours after the UN Security Council backed a 30-day ceasefire.
Very Very Cold !