Kate and Gerry McCann yesterday accused the British Government of hampering the search for their missing daughter.

They claim Portuguese cops have leads to Madeleine's disappearance but they have been unable to access them.

The couple say despite meetings with Gordon Brown and top UK officials, the three-year investigation has stalled.

And they claim red tape is blocking their own inquiries using private detectives.

After their successful attempt to maintain a legal ban on publication of a book which claims Madeleine is dead, Gerry, 41, called for a complete review of the case.

He said: "There are certainly instances where information we think is very credible and worthy of further investigation has not been actioned."