The Guardian - BLAIRMORE HOLDINGS story from 2012

David Cameron's father ran a network of offshore investment funds to help build the family fortune that paid for the prime minister's inheritance, the Guardian can reveal.

http://www.theguardian.com/politics/2012/apr/20/cameron-family-tax-havens

Cameron senior also Had money held outwith the Panama link, in other Tax Havens, like Geneva & Jersey