AMBER Rudd’s business career has come under scrutiny following an investigation that reveals her involvement with two companies in an offshore tax haven.

A fresh leak of tax haven data names the home secretary and Hastings MP as having been a director of two companies in the Bahamas – a fact she did not refer to earlier this year when defending David Cameron over his father’s investment fund in the same country.

The Guardian reported new details about her previous career in venture capital during the boom and bust 1990s. One enterprise led her to become a co-director of Monticello, a company that was at the centre of a share ramping investigation.

She was also involved in a company prospecting for diamonds in Siberia that was traded on a notoriously unregulated stock exchange.

Her spokesperson said: “It is a matter of public record that Amber had a career in business before entering politics. Monticello was thoroughly investigated 16 years ago and those who acted wrongly were identified and prosecuted.”