By Jonathan Davies

The UK has been ordered to pay an extra £1.7bn to the European Union budget because the economy has grown more than expected.

The EU makes calculations which determine how much each member state must pay based on individual GDP. The payment would add around a fifth to the UK's entire contribution to the EU budget, taking the total to £8.6bn.

Prime Minister David Cameron will today (Friday) deliver a speech to EU leaders in Brussels condemning the payment.

A government source said: "It's not acceptable to just change the fees for previous years and demand them back at a moment's notice.

"The European Commission was not expecting this money and does not need this money and we will work with other countries similarly affected to do all we can to challenge this."

Under the calculations, the UK and Netherlands have both been told they must pay more, whilst France and Germany, typically two of the biggest economies in the EU, are to receive a rebate.

David Cameron is set to hold talks with the Dutch Prime Minister, Mark Rutte, on how they could challenge the payments which are due on 1 December.

Patrizio Fiorilli, a European Commission spokesperson, said the payment "reflects an increase in wealth".

"Just as in Britain you pay more to the Inland Revenue if your earnings go up," he said.

Leader of the Conservative MEPs, Syed Kamall, said: The European Commission is penalising Britain for taking tough decisions, putting in place a long-term economic plan and for having the most successful economy in the EU, while actually rewarding France for being an economic basket case.

"David Cameron is absolutely right to stand up to this attempted daylight robbery by the EU.

"This is outrageous and harms the EU's relationship with Britain. At times like this, the European Commission can be its own worst enemy."

The payment heaps new pressure on David Cameron over the UK's relationship with Europe. The British public has become increasingly frustrated with the UK's relationship with the EU, and how Mr Cameron deals with this latest dispute could be crucial to the outcome of May's general election.

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