It was Guido, not the Conservative party, who made the original formal complaint to the Charity Commission on January 30, 2007. He called for an investigation under Section 8 of the Charities Act 1993.
It was reported here in this broadcast at the time. Guido is the unofficial opposition, the Conservatives are the official opposition. BBC reporters please take note.
Download copy of complaint here.
UPDATE : The BBC have now corrected their story.