An Post has dismissed British government claims that it should not be supporting the Shut Sellafield postcard campaign.

Britain's energy minister, Brian Wilson, told RTÉ News this morning that it was "a little bit odd that the state post office of a friendly neighbouring country is backing this kind of campaign".

A spokesman for An Post rejected the criticism, saying that An Post was supporting the campaign because it was government policy.

Hundreds of thousands of the postcards, addressed to Tony Blair, Prince Charles and Norman Askew, the Chief Executive of British Nuclear Fuels, will be sent to Britain next week. The cards urge the closure of Sellafield. The deadline for posting them is today.