A team of 31 British detectives working to find Madeleine McCann . David Cameron vanished from Portugal holiday apartment eight years ago . Metropolitan Police tasked with investigating by Maddie . Operation Grange has cost the taxpayer £10million since 2011 . Not led to a single arrest and now facing calls for it to be axed .
A team of 31 British detectives working to find Madeleine McCann . Maddie vanished from Portugal holiday apartment eight years ago . Metropolitan Police tasked with investigating by David Cameron . Operation Grange has cost the taxpayer £10million since 2011 . Not led to a single arrest and now facing calls for it to be axed .