Our response and analysis of the leaders' replies

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Gordon Brown:

The Robin Hood Tax campaign has much to be proud of. It's helped push development, climate change and tackling domestic poverty to the top of the political agenda. I want to assure all of you who have campaigned on this issue that finding additional sources of finance to achieve our goals in tackling climate change and supporting development will be a priority for me if re-elected. So too will be making sure the banks pay their debt to society.

When I asked the IMF to investigate the global financial levy and other options last year I was criticised by some, and the idea was ridiculed by the opposition. There is now growing consensus and the possibility of real progress, but we have further to go to secure agreement. Progress on a global scale will take leadership on the international stage.

I have a long record of fighting for a focus on development and climate change at the top table of international negotiations and I am ready to keep fighting their corner. Britain's leadership has helped keep these issues on the agenda - we must not let them drop now.

David Cameron:

We will create a safer banking system that serves the needs of the economy and protects us all from future crises. In the run-up to the financial crisis, British banks became amongst the most indebted and leveraged in the world - with disastrous consequences for us all. We will put in place a levy on banks. We are prepared to act unilaterally if necessary, but there is emerging international agreement on this approach in Europe and the US. Thanks to the efforts of the Robin Hood Tax Campaign's supporters, the campaign is going from strength to strength and is playing a crucial part in ensuring we reform the finance sector for the better of all of us

Nick Clegg:

Nick Clegg and the Liberal Democrats support the principle of a financial transactions tax. We would work with other countries to establish new sources of development financing, including bringing forward urgent proposals for such a tax - as well as a cap and trade system for carbon emissions from aviation and shipping.

Although we understand that it would be technically possible to levy a small transaction tax on sterling transactions alone, it would be much better to have a common approach by leading financial centres including the US, German, French and Swiss governments - so that we can ensure that the levy does indeed raise revenue and isn't simply avoided. The proceeds from such a tax could provide a modest source of revenue to be used for funding overseas development.

The Liberal Democrats have consistently been more ambitious on climate change and international development than the other major parties. A key part of this is ensuring that the developing world is prepared to deal with the challenges they face as a result of threats such as climate change. We'd work to make sure that adaptation and mitigation measures are financed by industrialised nations, on top of existing aid commitments.

Our reaction and analysis of the leaders' replies.

So there you have it, here are the responses from the three party leaders to the thousands of supporters who have been demanding a Robin Hood Tax.

What is clear is that Robin Hood Tax supporters have had a huge impact on the three men who want to be the UK's next Prime Minister. All promise to take action on the banks. Nick Clegg is committed to a Robin Hood Tax and to making it work for the benefit of the world's poorest people. Gordon Brown has campaigned hard for a Robin Hood Tax and promises to ensure that a bank tax is used to help finance the fight against poverty and climate change, but stops short of saying the UK should go it alone. David Cameron agrees with you that the banks have been reckless and thinks there should be a tax on banks in the UK, without waiting for the rest of the world, but unfortunately he does not make a link to poverty and climate change.

Not bad, but not good enough. We need two guarantees; that this tax will be big enough to meet the needs of the poorest and planet, and that the money raised will go to these good causes and not just government coffers. So merry men and women don't put down your bows and arrows just yet.