Tory donors, peers and former MPs are among those linked to the tax haven row, it was revealed last night.

The list of Conservative grandees and supporters threatened to heap fresh embarrassment on the PM following his calls for an overhaul of the secretive offshore industry.

Six peers, three ex-MPs and a string of businessmen were named as having connections to firms used by Panamanian lawyers Mossack Fonseca. A crossbench peer and a Ukip donor were also named in the documents.

Former tax exile David Rowland (left) is shareholder in dozens of offshore firms and he and his family held shares and properties in British Virgin Islands screen entities. JCB heir Anthony Bamford (right with his daughter Alice) was given a peerage months after closing a firm registered in the BVI

There is no evidence of wrongdoing by the politicians and donors and it is legal to manage money offshore, but the Tories have already faced criticism after it emerged many of their election candidates last year had received donations from offshore tax havens. Political figures linked to revelations included:

David Rowland

Former tax exile David Rowland, who was based in Guernsey for 40 years, has donated almost £3million to the Tories and was appointed party treasurer in June 2010.

He stood down two months later – before even starting the job – after the Mail exposed damaging revelations about his career.

He was once branded ‘a shady financier’ in Parliament, and sources claimed Mr Cameron ignored warnings he was unsuitable for the post. He stood down citing ‘the expansion of his global business interests’.

Mr Rowland is shareholder in dozens of offshore firms and he and his family held shares and properties in British Virgin Islands (BVI) screen entities, The Guardian reported. He declined to comment.

Lord Bamford

JCB heir Anthony Bamford was given a peerage months after closing a firm registered in the BVI, according to the leaked documents.

He has donated more than £4million to the Tories through personal gifts and JCB companies, and was first recommended for a peerage by Mr Cameron in 2010. He withdrew his name from consideration but was granted a peerage in 2013.

Documents show he was the sole shareholder of BVI company Casper Ltd from 1994 until it was dissolved in 2012. A spokesman said Casper Ltd never owned any assets or engaged in any activity.

Tony Buckingham

Energy firm Heritage Oil, founded by Tory donor Tony Buckingham, ‘urgently’ moved its registration from one tax haven to another, the leaks reveal. The move could have permitted it to avoid hundreds of millions of pounds in tax.

Mossack Fonseca was allegedly ordered to transfer the company registration from the Bahamas to Mauritius after Heritage Oil was handed a large tax bill in Uganda.

The Guardian said the leaked emails appeared to show an attempt to use a tax loophole to avoid a capital gains tax bill in Uganda by paying a much smaller sum in Mauritius.

Heritage Oil said: ‘The process of re-domiciling was commenced for a variety of reasons.’

Michael Mates

Michael Mates stood down as Tory MP for East Hampshire in 2010. He is a shareholder in Haylandale, which leased land in Barbuda to develop as a beach resort.

He said he was invited to become the company’s chairman after it was set up in 2003 to help ‘deal with’ the Caribbean island’s government and his shareholding was ‘small and uninfluential’. The hotel venture failed so he did not receive any remuneration, he added.

Michael Mates (left) stood down as Tory MP for East Hampshire in 2010. He is a shareholder in Haylandale, which leased land in Barbuda to develop as a beach resort. Crossbench peer Karan Bilimoria (right) is listed as one of more than 100 shareholders in BVI company Mulberry Holdings Asset Limited

Lord Bilimoria

Best known for founding Cobra Beer, crossbench peer Karan Bilimoria is listed as one of more than 100 shareholders in BVI company Mulberry Holdings Asset Limited.

Lord Bilimoria told The Guardian that Mulberry was a dormant company and had been formed for Cobra’s ex-shareholders, ‘many of whom are not resident in the UK’.

Arron Banks

Arron Banks is Ukip’s largest donor, giving more than £1million, and leads Leave.EU, one of the groups seeking to run the Out referendum campaign. The ex-Tory donor is head of Southern Rock Insurance Company, which underwrites insurance policies for the website GoSkippy.com, which he founded.

He is listed as the shareholder of a company registered in the BVI called PRI Holdings Limited.

Arron Banks (left) is listed as the shareholder of a company registered in the BVI called PRI Holdings Limited. Sir Tony Baldry (right) chaired BVI company Westminster Oil Ltd, which owns shares in a second BVI firm called Westminster Caspian, which operated in Kazakhstan

Shares from PRI were also transferred to Elizabeth Bilney, the chief executive of Leave.EU. PRI Holdings is sole shareholder of African Strategic Resources Limited, which is a BVI firm managed in Gibraltar. Banks declined to comment.

Sir Tony Baldry

Sir Tony Baldry was Tory MP for Banbury from 1983 until last year, and was briefly an agriculture minister under John Major, when he had to deal with the fallout from the BSE epidemic.

He chaired BVI company Westminster Oil Ltd, which owns shares in a second BVI firm called Westminster Caspian, which operated in Kazakhstan.

Sir Tony said Westminster Oil had been registered as an interest with the House of Commons, and all directors’ fees had been registered with HMRC.

Howard Flight (pictured) is a former deputy chairman of the Tory Party who was effectively deselected as an MP by Michael Howard in 2005

He said the jurisdiction was chosen as shareholders and directors came from a number of countries.

Lord Flight

Howard Flight is a former deputy chairman of the Tory Party who was effectively deselected as an MP by Michael Howard in 2005 after he was recorded saying the party would make much deeper cuts than in its manifesto.

Five years later he courted controversy for suggesting welfare changes would encourage ‘breeding’ among the poor.

He was made a peer by Mr Cameron and is regulator of financial services on Guernsey.

His Guinness Flight asset management business included a trust company in Guernsey that used Mossack Fonseca firms to manage investments.