BBC News - Mensch berates 'immoral' Twitter users over abuse
"There is quite a bit of legislation available to us - the Communications Act 2003, the Malicious Communications Act back in 1988 talks about offences of communications with an intent to cause distress, anxiety or are grossly offensive.
"And clearly some of this is either in or very close to that border."
Much like section 30 etc. of the Criminal Code in Australia. Whoops...