In 1998, 70,000 people protested at the G8 summit, calling for the debts of 52 impoverished countries to be cancelled as a way of celebrating the millennium.
Just after the G8 agreed to support developing countries collect taxes owed to them, a parliamentary committee voted against legislation to make the task easier.
David Cameron has raised the case of Shaker Aamer with President Obama. Mr Aamer is on hunger-strike and is the last remaining British resident in Guantanamo Bay.
Amnesty International says that human rights must be high on the agenda at the G8 summit in 2013 and that policing must respect the right of peaceful protest.
There was a negative response yesterday to the declaration from the Major Economies Forum which met on the sidelines of the G8 summit to discuss progress towards a global climate change deal scheduled to be completed by the end of the year.
G8 leaders must demonstrate much greater political courage on climate change or they will condemn yesterday's Major Economies Forum declaration to being little more than hot air, Christian Aid has warned.
G8 leaders are in danger of squandering opportunities and plunging poor people into deeper climate chaos and poverty, the aid and development agency Tearfund has said.
As world leaders begin meeting in Italy, the aid agency World Vision has accused them of failing to honour aid pledges to the world’s poorest countries.