David Cameron will face questions in Parliament over party funding after he visited a factory in Brazil owned by Sir Anthony Bamford, one of the Tories' biggest donors, during his recent trade trip.
Shadow Cabinet Office minister Michael Dugher told The Independent on Sunday he is to table a series of questions after the party conferences regarding the Prime Minister's visit to the JCB plant in Sorocaba, near Sao Paulo, on Thursday.
Mr Dugher said: "David Cameron has learnt nothing from the cash-for-access scandal, when his chief fundraiser was boasting of dinners for wealthy donors. Now it looks like it's government trips to help rich Tory donors."
A Downing Street spokesman defended the PM's visit as "appropriate".