Kofi Annan, the former secretary-general of the United Nations, and Bob Geldof, the founder of Live Aid, launched a new ”climate justice” campaign on Friday ahead of December’s UN Climate Change Conference in Copenhagen.

The campaign, dubbed ”tck tck tck: Time for Climate Justice”, will see advertising agencies and major organisations such as HSBC and Oxfam use mass marketing to call on world leaders to agree a ”just and binding deal” on climate change.