ITV News Westminster producer Adam Smith has tweeted:
Lawyer for the woman who accused Mike Hancock of sexual assault says Nick Clegg's failure to act sooner caused her client further "distress"
Lawyer: The failure of the Lib Dems to act sooner on Mike Hancock made his accuser feel like there was a "conspiracy against her" @itvnews
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Among those expected to attend the ceremony will be former US President Bill Clinton and ex-Northern Ireland first minister Peter Robinson.
Five people have been killed and 40 injured after a car and knife attack in London on Wednesday.
A wet, wintry night in places with rain and hill snow slow to move away from southern Scotland and northern England.