By no other means would her wayward son ever have become Sir Mark Thatcher.

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The ex-SAS officer also alleged Sir Mark Thatcher was "part of the team".

BBC: E Guinea seeks Thatcher's arrest

The government of Equatorial Guinea is meanwhile seeking the extradition from South Africa of Sir Mark Thatcher, son of former UK Prime Minister Margaret Thatcher.

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Lady Thatcher's children, Sir Mark and Carol Thatcher, said they appreciated the "great honour".

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This is how Mark Thatcher is now Sir Mark.

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Denis Thatcher, father of Sir Mark, 59, and twin sister Carol, died in 2003.

BBC: Son thanks public for support after Thatcher's death

Sir Mark, speaking to reporters outside Baroness Thatcher's former home in Belgravia, spoke of how "enormously proud and grateful we are that Her Majesty the Queen has agreed to attend the service next week in St Paul's".

BBC: Son thanks public for support after Thatcher's death