David Cameron arrives for eurozone talks in Berlin

David Cameron has said he wants the euro to succeed but insists the UK will not be part of further integration seen as "necessary" to help it continue.

Speaking in Berlin, ahead of talks with German Chancellor Angela Merkel, the prime minister said the UK's "healthy growth" was linked to the eurozone's fortunes.

But he said the UK would not underwrite Spanish and Greek bank deposits or support an EU-wide financial tax.

Mrs Merkel has suggested that further political union is a pre-condition.

Gavin Hewitt reports.