A British man is appealing for the third time against his conviction over a joke posted on Twitter.

Paul Chambers tweeted he would blow up a local airport - closed because of bad weather - so he could fly to see his partner in Ireland.

Web users, including some celebrities, have supported the man saying his case is raising questions of internet freedom in the UK.

Al Jazeera's Laurence Lee reports from London.

Source: Al Jazeera