The UK government is "putting business interests in front of public health", the man instrumental in bringing about cigarette packaging reforms in Australia said today.
Simon Chapman, a professor of public health at the University of Sydney told BBC Radio 4's World At One programme:
I think the British Government are being very disingenuous in saying let's see what happens in Australia.
It's going to probably take them a good many years to see whether or not there has been an accelerated downturn.
More top news
The 100 leaders did not agree on concrete proposals, but the meeting has raised hopes for concrete international agreement next December.
The speech was OK, passionate at times and certainly well received, but did not display the passion of past speeches.
The brother-in-law of a British hostage being held by Islamic State militants in Syria, says he is scared by US airstrikes in the country.