The meetings have mainly concerned matters that Prince Charles is well known for championing such as rural affairs and town planning, according to the report.
He is believed to have met David Cameron seven times, Labour leader Ed Miliband three times and Nick Clegg, the Deputy Prime Minister, once.
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A colder start to the day with outbreaks of rain expected across Wales and southern England.
A further 85 buses are expected to arrive on Tuesday and Wednesday, with officials saying the entire operation will last at least a week.
The reality star had filed a defamation lawsuit against celebrity gossip site MediaTakeOut.com.