Farage wrote that Carswell, UKIP's only MP, should be ejected from the party, saying:
"As a party, how can we let a man represent us in the House of Commons who actively and transparently seeks to damage us? I think there is little future for UKIP with him staying inside this party. The time for him to go is now.”
It followed a row over the party's efforts to secure a knighthood or a peerage for Farage. In e-mails leaked to the Telegraph, Carswell appeared to mock Farage, saying he should be given an honour "for services to headline writers".
What constitutes an offence of corporate manslaughter? Who can be prosecuted for it and what are the punishments?