Of course in the UK we don't have a right to free speech. It's defined by the gaps between laws that limit speech in some contexts. In theory we do have Article 10 of the European Convention on Human Rights, but that has so many riders that it's not of huge use.
The legislation almost certainly won't last in it's current state. The CPS are already running round tables to discuss the problems http://blog.cps.gov.uk/2012/10/points-for-discussion-for-soc... and the case-law with won appeals by folk like the airport guy will help too.
Most of the set of current prosecutions in the UK are happening under section 127 of the Communication Act of 2003 - http://www.cps.gov.uk/legal/a_to_c/communications_offences/#....
There's a nice dissection of the reasons behind the problems with this bit of legalisation over here http://blogscript.blogspot.co.uk/2012/09/section-127-communi...
The legislation almost certainly won't last in it's current state. The CPS are already running round tables to discuss the problems http://blog.cps.gov.uk/2012/10/points-for-discussion-for-soc... and the case-law with won appeals by folk like the airport guy will help too.